LTC6363 Family Precision, Low Power Differential Amplifier/ADC Driver Family FEATURES DESCRIPTION Available with User Settable Gain or Fixed-Gain of 0.5V/V, 1V/V, or 2V/V nn 2.9nV/Hz Input-Referred Noise nn 2mA Maximum Supply Current nn 45ppm Max Gain Error nn 0.5ppm/C Max Gain Error Drift nn 94dB Min CMRR nn 100V Max Offset Voltage nn 50nA Max Input Offset Current nn Fast Settling: 720ns to 18-Bit, 8V P-P Output nn 2.8V (1.4V) to 11V (5.5V) Supply Voltage Range nn Differential Rail-to-Rail Outputs nn Input Common Mode Range Includes Ground nn Low Distortion: 118dB SFDR at 2kHz, 18V P-P nn 500MHz Gain-Bandwidth Product nn 35MHz -3dB Bandwidth nn Low Power Shutdown: 20A (V = 3V) S nn 8-Lead MSOP, 2mm x 3mm 8-Lead DFN and 3mm x 3mm 16-lead LFCSP Packages The LTC(R)6363 family consists of four fully differential, low power, low noise amplifiers with rail-to-rail outputs optimized to drive SAR ADCs. The LTC6363 is a standalone differential amplifier, where the gain is typically set using four external resistors. The LTC6363-0.5, LTC6363-1, and LTC6363-2 each have internal matched resistors to create fixed gain blocks with gains of 0.5V/V, 1V/V, and 2V/V respectively. Each of the fixed-gain amplifiers features precision laser trimmed on-chip resistors for accurate, ultrastable gain and excellent CMRR. nn Family Selection Table n n n n n GAIN LTC6363 User Set LTC6363-0.5 0.5V/V LTC6363-1 APPLICATIONS n PART NUMBER 20-Bit, 18-Bit and 16-Bit SAR ADC Drivers Single-Ended-to-Differential Conversion Low Power ADC Drivers Level Shifter Differential Line Drivers Battery-Powered Instrumentation LTC6363-2 CONFIGURATION + - +IN -IN -OUT +OUT RF +IN 1V/V -IN 2V/V RI RI + - -OUT +OUT RF All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION DC-Coupled Interface from a Ground-Referenced Single-Ended Input to an LTC2378-20 SAR ADC LTC6363-1 Driving LTC2378-20 fIN = 2kHz, -1dBFS,131k-Point FFT 6V 0 +IN 1050 LTC6363-1 -OUT 1050 30.1 3.3nF V+ VIN + VOCM AIN+ 3.3nF - 0.1F -IN 1050 1050 V- SHDN 6V +OUT 30.1 5V 2.5V VREF VDD -40 20-BIT LTC2378-20 SAR ADC AIN- V- VS = 6V, -1V VOUTDIFF = 8.9VP-P HD2 = -119.5dBc HD3 = -128.3dBc SFDR = 118.3dB THD = -115.3dB SNR = 102dB SINAD = 101.8dB -20 1Msps GND 6363 TA01a 3.3nF -1V For more information www.analog.com AMPLITUDE (dBFS) V+ -60 -80 -100 -120 -140 -160 0 50 100 150 200 250 300 350 400 450 500 FREQUENCY (kHz) 6363 TA01b Rev. C 1 LTC6363 Family ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V+ - V-)...................................12V Input Voltage (+IN, -IN) (Note 2) LTC6363-0.5.................... (V-) - 14.9V to (V+) + 14.9V LTC6363-1.........................(V-) - 11.1V to (V+) + 11.1V LTC6363-2....................... (V-) - 7.45V to (V+) + 7.45V Input Current (+IN, -IN) LTC6363 (Note 3)........... 10mA Input Current (VOCM, SHDN) (Note 3)................... 10mA Output Short-Circuit Duration (Note 4)...........................................Thermally Limited Operating Temperature Range (Note 5) LTC6363I/LTC6363I-0.5/LTC6363I-1/ LTC6363I-2...........................................-40C to 85C LTC6363H/LTC6363H-0.5/LTC6363H-1/ LTC6363H-2....................................... -40C to 125C Specified Temperature Range (Note 6) LTC6363I/LTC6363I-0.5/LTC6363I-1/ LTC6363I-2...........................................-40C to 85C LTC6363H/LTC6363H-0.5/LTC6363H-1/ LTC6363H-2....................................... -40C to 125C Maximum Junction Temperature........................... 150C Storage Temperature Range................... -65C to 150C MSOP Lead Temperature (Soldering, 10 sec)......... 300C PIN CONFIGURATION LTC6363 LTC6363 TOP VIEW TOP VIEW -IN 1 VOCM 2 V+ 3 +OUT 4 - + +- 8 +IN -IN 1 8 7 6 5 +IN SHDN V- -OUT MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150C, JA = 273C/W VOCM 2 9 V- V+ 3 +OUT 4 7 SHDN - + +- 6 V- 5 -OUT DCB PACKAGE 8-LEAD (2mm x 3mm) PLASTIC DFN TJMAX = 150C, JA = 64C/W, JC = 10.6C/W EXPOSED PAD (PIN 9) MUST BE CONNECTED TO V- LTC6363-0.5/LTC6363-1/LTC6363-2 TOP VIEW V- V- V- V- 16 15 14 13 TOP VIEW -IN 1 VOCM 2 V+ 3 +OUT 4 - + +- 8 7 6 5 +IN SHDN V- -OUT MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150C, JA = 273C/W -FB 1 12 SHDN +- -+ +IN 2 -IN 3 +FB 4 5 6 11 -OUT 10 +OUT 17 7 9 VOCM 8 V+ V + V + V+ LFCSP PACKAGE 16-LEAD (3mm x 3mm) PLASTIC LFCSP TJMAX = 150C, JA = 81.2C/W, JC = 39.7C/W EXPOSED PAD (PIN 17) MUST BE CONNECTED TO V- OR GROUND Rev. C 2 For more information www.analog.com LTC6363 Family ORDER INFORMATION TUBE TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC6363IMS8#PBF LTC6363IMS8#TRPBF LTGSQ 8-Lead Plastic MSOP -40C to 85C LTC6363HMS8#PBF LTC6363HMS8#TRPBF LTGSQ 8-Lead Plastic MSOP -40C to 125C LTC6363IMS8-0.5#PBF LTC6363IMS8-0.5#TRPBF LTGST 8-Lead Plastic MSOP -40C to 85C LTC6363HMS8-0.5#PBF LTC6363HMS8-0.5#TRPBF LTGST 8-Lead Plastic MSOP -40C to 125C LTC6363IMS8-1#PBF LTC6363IMS8-1#TRPBF LTGSR 8-Lead Plastic MSOP -40C to 85C LTC6363HMS8-1#PBF LTC6363HMS8-1#TRPBF LTGSR 8-Lead Plastic MSOP -40C to 125C LTC6363IMS8-2#PBF LTC6363IMS8-2#TRPBF LTGSS 8-Lead Plastic MSOP -40C to 85C LTC6363HMS8-2#PBF LTC6363HMS8-2#TRPBF LTGSS 8-Lead Plastic MSOP -40C to 125C TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC6363IDCB#TRMPBF LTC6363IDCB#TRPBF LGVG 8-Lead (2mm x 3mm) Plastic DFN -40C to 85C LTC6363HDCB#TRMPBF LTC6363HDCB#TRPBF LGVG 8-Lead (2mm x 3mm) Plastic DFN -40C to 125C LTC6363IRD#PBF LTC6363IRD#TRPBF LHJW 16-Lead (3mm x 3mm) Plastic LFCSP -40C to 85C LTC6363HRD#PBF LTC6363HRD#TRPBF LHJW 16-Lead (3mm x 3mm) Plastic LFCSP -40C to 125C Lead Free Finish TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Contact the factory for parts specified with wider operating temperature ranges. Contact the factory for information on lead based finish parts. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. ELECTRICAL CHARACTERISTICS Complete LTC6363 Family. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS MIN TYP PSRR (Note 7) Differential Power Supply Rejection (VS/VOSDIFF) VS = 2.8V to 11V PSRRCM (Note 7) l 90 125 dB Output Common Mode Power Supply Rejection VS = 2.8V to 11V (VS/VOSCM) l 70 90 dB GCM Common Mode Gain (VOUTCM/VOCM) VS = 3V, VOCM from 0.5V to 2.5V VS = 5V, VOCM from 0.5V to 4.5V VS = 10V, VOCM from 0.5V to 9.5V l l l 1 1 1 V/V V/V V/V GCM Common Mode Gain Error 100 * (GCM - 1) VS = 3V, VOCM from 0.5V to 2.5V VS = 5V, VOCM from 0.5V to 4.5V VS = 10V, VOCM from 0.5V to 9.5V l l l 0.2 0.1 0.07 1 0.5 0.4 % % % BAL Output Balance (VOUTCM/VOUTDIFF) VOUTDIFF = 2V Single-Ended Input Differential Input l l -58 -58 -35 -35 dB dB VS = 3V VS = 5V VS = 10V l l l 1 1 1 6 6 6 mV mV mV VOSCM Common Mode Offset Voltage (VOUTCM - VOCM) VOSCM/T Common Mode Offset Voltage Drift VOUTCMR (Note 9) Output Signal Common Mode Range (Voltage Range for the VOCM Pin) 10 l VOCM Driven Externally, VS = 3V VOCM Driven Externally, VS = 5V VOCM Driven Externally, VS = 10V l l l MAX 0.5 0.5 0.5 UNITS V/C 2.5 4.5 9.5 V V V Rev. C For more information www.analog.com 3 LTC6363 Family ELECTRICAL CHARACTERISTICS Complete LTC6363 Family. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS VOCM Self-Biased Voltage at the VOCM Pin VOCM Not Connected, VS = 3V VOCM Not Connected, VS = 5V VOCM Not Connected, VS = 10V RINVOCM Input Resistance, VOCM Pin MIN TYP MAX UNITS l l l 1.38 2.33 4.79 1.5 2.5 5 1.82 2.82 5.21 V V V l 1.3 1.8 2.3 VOCM Bandwidth 15 VS Supply Voltage Range Guaranteed by PSRR IS Supply Current VS = 3V, Active 2.8 l 11 l VS = 5V, Active 1.8 1.95 mA mA 20 40 A 1.75 1.85 2 mA mA 30 65 A 1.9 2 2.2 mA mA l VS = 5V, Shutdown l VS = 10V, Active l VS = 10V, Shutdown 70 130 + - (V + V )/2 + 0.4 l V 1.7 l VS = 3V, Shutdown M MHz A VIL SHDN Input Logic Low l VIH SHDN Input Logic High l tON Turn-On Time 4 s tOFF Turn-Off Time 2 s RSHDN Input Resistance, SHDN Pin (V+ + V-)/2 + 1.2 300 l 500 V V 700 k LTC6363 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). Typical specifications apply to the internal amplifier inside all versions. SYMBOL PARAMETER CONDITIONS VOSDIFF (Note 7) Differential Offset Voltage VS = 3V VICM =1.5V l VS = 5V VICM = 2.5V l VS = 10V VICM = 5V l VS = 3V VS = 5V VS = 10V l l l VOSDIFF/T Differential Offset Voltage Drift (Notes 7, 8) AVOL Open-Loop Voltage Gain IB (Note 10) Input Bias Current VS = 3V VS = 5V VS = 10V IOS (Note 10) Input Offset Current VS = 3V MIN TYP MAX UNITS 25 100 200 V V 25 100 200 V V 25 100 200 V V 0.45 0.45 0.45 1.25 1.25 1.25 V/C V/C V/C 125 l l l -1 -1 -1 -0.5 -0.5 -0.5 -0.1 -0.1 -0.1 A A A 5 50 75 nA nA 5 50 75 nA nA 5 50 75 nA nA l VS = 5V l VS = 10V l dB Rev. C 4 For more information www.analog.com LTC6363 Family ELECTRICAL CHARACTERISTICS LTC6363 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). Typical specifications apply to the internal amplifier inside all versions. SYMBOL PARAMETER CONDITIONS IOS/T (Note 8) Input Offset Current Drift VS = 3V VS = 5V VS = 10V MIN RIN Input Resistance Common Mode Differential Mode 50 40 M k CIN Input Capacitance Differential Mode 2 pF en (Note 7) Differential Input Noise Voltage Differential Input Noise Voltage Density 0.1Hz to 10Hz f = 100kHz (Not Including RI/RF) l l l TYP MAX UNITS 30 30 30 150 150 150 pA/C pA/C pA/C 2.5 2.9 VP-P nV/Hz 20 nV/Hz 0.55 pA/Hz envocm Common Mode Noise Voltage Density f = 100kHz in Input Noise Current Density f = 100kHz (Not Including RI/RF) VICMR (Note 9) Input Common Mode Range VS = 3V VS = 5V VS = 10V l l l 0 0 0 CMRRI (Note 7) Input Common Mode Rejection Ratio (Input Referred) VICM/VOSDIFF VS = 3V, VICM from 0V to 1.8V VS = 5V, VICM from 0V to 3.8V VS = 10V, VICM from 0V to 8.8V l l l 78 85 90 110 115 120 dB dB dB CMRRIO (Note 7) Output Common Mode Rejection Ratio (Input Referred) VOCM/VOSDIFF VS = 3V, VOCM from 0.5V to 2.5V VS = 5V, VOCM from 0.5V to 4.5V VS = 10V, VOCM from 0.5V to 9.5V l l l 70 80 90 120 120 120 dB dB dB VOUT Output Voltage, High, Either Output Pin IL= 0mA, VS = 3V IL = -5mA, VS = 3V l l 2.8 2.75 2.88 2.83 V V IL= 0mA, VS = 5V IL = -5mA, VS = 5V l l 4.8 4.75 4.88 4.83 V V IL= 0mA, VS = 10V IL = -5mA, VS = 10V l l 9.8 9.7 9.88 9.83 V V IL= 0mA, VS = 3V IL = 5mA, VS = 3V l l 0.1 0.15 0.15 0.25 V V IL= 0mA, VS = 5V IL = 5mA, VS = 5V l l 0.1 0.15 0.15 0.25 V V IL= 0mA, VS = 10V IL = 5mA, VS = 10V l l 0.1 0.15 0.2 0.3 V V Output Short-Circuit Current, Either Output Pin, Sinking VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 12 13 14 25 35 40 mA mA mA Output Short-Circuit Current, Either Output Pin, Sourcing VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 25 27 30 55 75 90 mA mA mA Gain-Bandwidth Product fTEST = 200kHz 390 230 500 l MHz MHz 35 MHz Output Voltage, Low, Either Output Pin ISC GBW 1.8 3.8 8.8 V V V f-3dB -3dB Bandwidth RI = RF =1k SR Slew Rate Differential 18VP-P Output 75 V/s FPBW (Note 11) Full Power Bandwidth 10VP-P Output 18VP-P Output 2.4 1.3 MHz MHz HD2/HD3 2nd/3rd Order Harmonic Distortion Single-Ended Input f = 1kHz, VOUT = 18VP-P f = 10kHz, VOUT = 18VP-P f = 100kHz, VOUT = 18VP-P -123/-128 -120/-108 -92/-85 dBc dBc dBc Rev. C For more information www.analog.com 5 LTC6363 Family ELECTRICAL CHARACTERISTICS LTC6363-0.5 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS tS Settling Time to a 8VP-P Output Step 0.1% 0.01% 0.0015% (16-Bit) 4ppm (18-Bit) VOSDIFF (Note 7) Differential Offset Voltage VS = 3V VICM =1.5V l VS = 5V VICM = 2.5V l VS = 10V VICM = 5V l Differential Offset Voltage Drift VS = 3V VS = 5V VS = 10V l l l Differential Gain VOUT = 16VP-P VOSDIFF/T (Notes 7, 8) GDIFF MIN TYP MAX 290 330 370 720 ns ns ns ns 25 125 250 V V 25 125 250 V V 25 125 250 V V 0.45 0.45 0.45 1.25 1.25 1.25 V/C V/C V/C 0.5 Differential Gain Error 0.002 l Differential Gain Nonlinearity V/V 0.0045 0.0075 0.5 Differential Gain Drift vs Temperature (Note 8) 0.2 l UNITS % % ppm 0.5 ppm/C en (Note 7) Differential Input Referred Noise Voltage Density f = 100kHz, (Includes Internal Resistor Noise) envocm Common Mode Noise Voltage Density f = 100kHz RIN Input Resistance Common Mode Differential Mode 1050 2800 CIN Input Capacitance Differential Mode Common Mode 2.5 13.5 pF pF VICMR (Note 9) Input Common Mode Range VS = 3V, VOCM = 1.5V VS = 5V,VOCM = 2.5V VS = 10V, VOCM = 5V CMRRI (Note 7) Input Common Mode Rejection Ratio (Input Referred) VICM/VOSDIFF VS = 3V, VICM from -3V to 2.4V 20 nV/Hz -3 -5 -10 90 80 106 l dB dB 94 85 106 l dB dB 94 85 106 l dB dB 85 80 100 l dB dB 90 85 106 l dB dB 90 85 106 l dB dB VS = 10V, VICM from -10V to 16.4V Output Common Mode Rejection Ratio (Input VS = 3V, VOCM from 0.5V to 2.5V Referred) VOCM/VOSDIFF nV/Hz l l l VS = 5V, VICM from -5V to 6.4V CMRRIO (Note 7) 15.1 VS = 5V, VOCM from 0.5V to 4.5V VS = 10V, VOCM from 0.5V to 9.5V 2.4 6.4 16.4 V V V Rev. C 6 For more information www.analog.com LTC6363 Family ELECTRICAL CHARACTERISTICS LTC6363-0.5 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS MIN TYP VOUT Output Voltage, High, Either Output Pin IL= 0mA, VS = 3V IL = -5mA, VS = 3V l l 2.77 2.74 2.88 2.83 V V IL= 0mA, VS = 5V IL = -5mA, VS = 5V l l 4.75 4.72 4.86 4.81 V V IL= 0mA, VS = 10V IL = -5mA, VS = 10V l l 9.72 9.64 9.83 9.78 V V IL= 0mA, VS = 3V IL = 5mA, VS = 3V l l 0.11 0.19 0.19 0.27 V V IL= 0mA, VS = 5V IL = 5mA, VS = 5V l l 0.13 0.19 0.2 0.28 V V IL= 0mA, VS = 10V IL = 5mA, VS = 10V l l 0.17 0.23 0.28 0.38 V V Output Short-Circuit Current, Either Output Pin, Sinking VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 12 13 14 25 35 40 mA mA mA Output Short-Circuit Current, Either Output Pin, Sourcing VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 25 27 30 55 75 90 mA mA mA 35 MHz Output Voltage, Low, Either Output Pin ISC MAX UNITS f-3dB -3dB Bandwidth SR Slew Rate Differential 18VP-P Output 44 V/s FPBW (Note 11) Full Power Bandwidth 10VP-P Output 18VP-P Output 1.4 0.8 MHz MHz HD2/HD3 2nd/3rd order Harmonic Distortion Single-Ended Input f = 1kHz, VOUT = 10VP-P f = 10kHz, VOUT = 10VP-P f = 100kHz, VOUT = 10VP-P -125/-122 -108/-111 -87/-78 dBc dBc dBc tS Settling Time to a 8VP-P Output Step 0.1% 0.01% 0.0015% (16-Bit) 4ppm (18-Bit) 420 440 550 740 ns ns ns ns LTC6363-1 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS VOSDIFF (Note 7) Differential Offset Voltage VS = 3V VICM =1.5V l VS = 5V VICM = 2.5V l VS = 10V VICM = 5V l Differential Offset Voltage Drift VS = 3V VS = 5V VS = 10V l l l Differential Gain VOUT = 16VP-P VOSDIFF/T (Notes 7, 8) GDIFF MIN TYP MAX UNITS 25 125 250 V V 25 125 250 V V 25 125 250 V V 0.45 0.45 0.45 1.25 1.25 1.25 V/C V/C V/C 1 0.002 Differential Gain Error l Differential Gain Nonlinearity V/V 0.0045 0.0075 0.5 Differential Gain Drift vs Temperature (Note 8) l 0.2 % % ppm 0.5 ppm/C Rev. C For more information www.analog.com 7 LTC6363 Family ELECTRICAL CHARACTERISTICS LTC6363-1 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS en (Note 7) Differential Input Referred Noise Voltage Density f = 100kHz, (Includes Internal Resistor Noise) MIN TYP MAX UNITS 10.5 nV/Hz 20 nV/Hz envocm Common Mode Noise Voltage Density f = 100kHz RIN Input Resistance Common Mode Differential Mode 1050 2100 CIN Input Capacitance Differential Mode Common Mode 1.5 13.5 pF pF VICMR (Note 9) Input Common Mode Range VS = 3V, VOCM = 1.5V VS = 5V,VOCM = 2.5V VS = 10V, VOCM = 5V CMRRI (Note 7) Input Common Mode Rejection Ratio (Input Referred) VICM/VOSDIFF VS = 3V, VICM from -1.5V to 2.1V l l l -1.5 -2.5 -5 90 80 100 l dB dB 94 85 100 l dB dB 94 85 100 l dB dB 90 85 100 l dB dB 90 85 100 l dB dB 94 90 100 l dB dB IL= 0mA, VS = 3V IL = -5mA, VS = 3V l l 2.78 2.74 2.89 2.85 V V IL= 0mA, VS = 5V IL = -5mA, VS = 5V l l 4.77 4.73 4.87 4.83 V V IL= 0mA, VS = 10V IL = -5mA, VS = 10V l l 9.74 9.66 9.85 9.81 V V IL= 0mA, VS = 3V IL = 5mA, VS = 3V l l 0.1 0.17 0.18 0.26 V V IL= 0mA, VS = 5V IL = 5mA, VS = 5V l l 0.11 0.15 0.19 0.27 V V IL= 0mA, VS = 10V IL = 5mA, VS = 10V l l 0.15 0.2 0.26 0.33 V V Output Short-Circuit Current, Either Output Pin, Sinking VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 12 13 14 25 35 40 mA mA mA Output Short-Circuit Current, Either Output Pin, Sourcing VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 25 27 30 55 75 90 mA mA mA VS = 5V, VICM from -2.5V to 5.1V VS = 10V, VICM from -5V to 12.6V CMRRIO (Note 7) Output Common Mode Rejection Ratio (Input VS = 3V, VOCM from 0.5V to 2.5V Referred) VOCM/VOSDIFF VS = 5V, VOCM from 0.5V to 4.5V VS = 10V, VOCM from 0.5V to 9.5V VOUT Output Voltage, High, Either Output Pin Output Voltage, Low, Either Output Pin ISC 2.1 5.1 12.6 V V V f-3dB -3dB Bandwidth 25 MHz SR Slew Rate Differential 18VP-P Output 45 V/s FPBW (Note 11) Full Power Bandwidth 10VP-P Output 18VP-P Output 1.4 0.8 MHz MHz HD2/HD3 2nd/3rd order Harmonic Distortion Single-Ended Input f = 1kHz, VOUT = 10VP-P f = 10kHz, VOUT = 10VP-P f = 100kHz, VOUT = 10VP-P -122/-125 -114/-105 -90/-82 dBc dBc dBc Rev. C 8 For more information www.analog.com LTC6363 Family ELECTRICAL CHARACTERISTICS LTC6363-2 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS tS Settling Time to a 8VP-P Output Step 0.1% 0.01% 0.0015% (16-Bit) 4ppm (18-Bit) VOSDIFF (Note 7) Differential Offset Voltage VS = 3V VICM =1.5V l VS = 5V VICM = 2.5V l VS = 10V VICM = 5V l Differential Offset Voltage Drift VS = 3V VS = 5V VS = 10V l l l Differential Gain VOUT = 16VP-P VOSDIFF/T (Notes 7, 8) GDIFF MIN TYP MAX 420 470 500 810 ns ns ns ns 25 125 250 V V 25 125 250 V V 25 125 250 V V 0.45 0.45 0.45 1.25 1.25 1.25 V/C V/C V/C 2 Differential Gain Error 0.002 l Differential Gain Nonlinearity V/V 0.0045 0.0075 0.5 Differential Gain Drift vs Temperature (Note 8) 0.2 l UNITS % % ppm 0.5 ppm/C en (Note 7) Differential Input Referred Noise Voltage Density f = 100kHz, (Includes Internal Resistor Noise) envocm Common Mode Noise Voltage Density f = 100kHz RIN Input Resistance Common Mode Differential Mode 1050 1400 CIN Input Capacitance Differential Mode Common Mode 0.6 13.5 pF pF VICMR (Note 9) Input Common Mode Range VS = 3V, VOCM = 1.5V VS = 5V,VOCM = 2.5V VS = 10V, VOCM = 5V CMRRI (Note 7) Input Common Mode Rejection Ratio (Input Referred) VICM/VOSDIFF VS = 3V, VICM from -0.75V to 1.95V 20 nV/Hz -0.75 -1.25 -2.5 90 80 106 l dB dB 94 85 112 l dB dB 94 85 112 l dB dB 90 85 106 l dB dB 94 90 106 l dB dB 94 90 106 l dB dB VS = 10V, VICM from -2.5V to 10.7V Output Common Mode Rejection Ratio (Input VS = 3V, VOCM from 0.5V to 2.5V Referred) VOCM/VOSDIFF nV/Hz l l l VS = 5V, VICM from -1.25V to 4.45V CMRRIO (Note 7) 7.55 VS = 5V, VOCM from 0.5V to 4.5V VS = 10V, VOCM from 0.5V to 9.5V 1.95 4.45 10.7 V V V Rev. C For more information www.analog.com 9 LTC6363 Family ELECTRICAL CHARACTERISTICS LTC6363-2 Only. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications and typical values are at TA = 25C. V+ = 10V, V- = 0V, VCM = VOCM = VICM = 5V, VSHDN = open. VS is defined as (V+ - V-). VOUTCM is defined as (V+OUT + V-OUT)/2. VICM is defined as (V+IN + V-IN)/2. VOUTDIFF is defined as (V+OUT - V-OUT). SYMBOL PARAMETER CONDITIONS MIN TYP VOUT Output Voltage, High, Either Output Pin IL= 0mA, VS = 3V IL = -5mA, VS = 3V l l 2.79 2.74 2.89 2.84 V V IL= 0mA, VS = 5V IL = -5mA, VS = 5V l l 4.78 4.73 4.88 4.83 V V IL= 0mA, VS = 10V IL = -5mA, VS = 10V l l 9.76 9.67 9.85 9.81 V V IL= 0mA, VS = 3V IL = 5mA, VS = 3V l l 0.09 0.17 0.18 0.26 V V IL= 0mA, VS = 5V IL = 5mA, VS = 5V l l 0.1 0.17 0.17 0.26 V V IL= 0mA, VS = 10V IL = 5mA, VS = 10V l l 0.13 0.19 0.25 0.33 V V Output Short-Circuit Current, Either Output Pin, Sinking VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 12 13 14 25 35 40 mA mA mA Output Short-Circuit Current, Either Output Pin, Sourcing VS = 3V, Output Shorted to 1.5V VS = 5V, Output Shorted to 2.5V VS = 10V, Output Shorted to 5V l l l 25 27 30 55 75 90 mA mA mA 15 MHz Output Voltage, Low, Either Output Pin ISC MAX UNITS f-3dB -3dB Bandwidth SR Slew Rate Differential 18VP-P Output 46 V/s FPBW (Note 11) Full Power Bandwidth 10VP-P Output 18VP-P Output 1.4 0.8 MHz MHz HD2/HD3 2nd/3rd order Harmonic Distortion Single-Ended Input f = 1kHz, VOUT = 10VP-P f = 10kHz, VOUT = 10VP-P f = 100kHz, VOUT = 10VP-P -116/-123 -114/-103 -92/-81 dBc dBc dBc tS Settling Time to a 8VP-P Output Step 0.1% 0.01% 0.0015% (16-Bit) 4ppm (18-Bit) 430 470 480 830 ns ns ns ns Rev. C 10 For more information www.analog.com LTC6363 Family ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Absolute Maximum input voltage for the LTC6363-0.5/LTC6363-1/ LTC6363-2 is conservatively calculated assuming the worst case output voltage. For details on this calculation refer to the Input Pin Protection section. Note 3: In the LTC6363, if input pins (+IN, -IN, VOCM and SHDN) must exceed either supply voltage, the input current must be limited to less than 10mA. Additionally, if the differential input voltage exceeds 1.4V, the input current must be limited to less than 10mA. In the LTC6363-0.5/LTC6363-1/ LTC6363-2 versions, the same limits apply to VOCM, SHDN and the internal amplifier's inputs. Please see the Input Common Mode Voltage Range and Input Pin Protection sections for additional details on calculating the input voltages on the internal amplifier's inputs while in a feedback configuration. Note 4: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output is shorted indefinitely. Note 5: The LTC6363I and LTC6363I-0.5/LTC6363I-1/LTC6363I-2 are guaranteed functional over the operating temperature range of -40C to 85C. The LTC6363H and LTC6363H-0.5/LTC6363H-1/LTC6363H-2 are guaranteed functional over the operating temperature range of -40C to 125C. Note 6: The LTC6363I and LTC6363I-0.5/LTC6363I-1/LTC6363I-2 are guaranteed to meet specified performance from -40C to 85C. The LTC6363H and LTC6363H-0.5/LTC6363H-1/LTC6363H-2 are guaranteed to meet specified performance from -40C to 125C. Note 7: Differential offset voltage, differential offset voltage drift, and PSRR are referred to the internal amplifier's input (summing junction) to allow for direct comparison of gain blocks with discrete amplifiers. CMRRI, CMRRIO and voltage noise are referenced to the LTC6363-0.5, LTC6363-1 and LTC6363-2's input pins. Refer to the Test Circuits section for more details. Note 8: Maximum differential offset voltage drift, input offset current drift and differential gain drift are determined by sampling typical parts. Drift is not guaranteed by test or QA sampled at this value. Note 9: Input common mode range is tested by verifying that at the limits stated in the Electrical Characteristics table, the differential offset (VOSDIFF) and common mode offset (VOSCM) have not deviated by more than 200V and 10mV respectively compared to the VICM = 5V (at VS = 10V), VICM = 2.5V (at VS = 5V) and VICM = 1.5V (at VS = 3V) cases. Output common mode range is tested by verifying that at the limits stated in the Electrical Characteristics table, the common mode offset (VOSCM) has not deviated by more than 15mV compared to the VOCM = 5V (at VS = 10V), VOCM = 2.5V (at VS = 5V) and VOCM = 1.5V (at VS = 3V) cases. Note 10: Input bias current is defined as the average of the input currents flowing into the input pins (-IN and +IN). Input Offset current is defined as the difference between the input bias currents (IOS = IB+ - IB-). Note 11: Full power bandwidth is calculated from the slew rate. FPBW = SR/(2 * * VP) Rev. C For more information www.analog.com 11 LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Typical Distribution of Differential Input Offset Voltage Drift 50 0 -50 -100 -150 -200 -50 -25 0 25 50 75 TEMPERATURE (C) 100 20 15 10 5 2.0 0 -4 -8 -12 Supply Current vs Supply Voltage 2.1 1.7 1.6 VS = 10V VS = 3V -25 0 25 50 75 TEMPERATURE (C) 100 1.4 1.2 1.0 0.8 0.6 0.4 TA = -40C TA = 25C TA = 125C 0.2 0 125 0 1 6363 G03 2 3 4 5 6 7 SUPPLY VOLTAGE (V) 8 9 5.0 VSHDN = V- 0.6 -4.7 4.7 -4.8 +SWING (V) 4.8 8 9 4.6 10 6363 G06 TA = -40C TA = 25C TA = 125C 0 1 2 3 4 5 6 7 SHDN VOLTAGE (V) 8 4.5 -15 -4.9 TA = -40C TA = 25C TA = 125C -10 -5 0 5 LOAD CURRENT (mA) 10 9 10 6363 G05 150 15 6363 G08 -5.0 -SWING (V) 45 3 4 5 6 7 SUPPLY VOLTAGE (V) 0.9 0 -4.5 VS = 5V -4.6 2 1.2 Differential Power Supply Rejection Ratio vs Frequency 4.9 1 V+ = 10V V- = 0V 0.3 10 60 TA = -40C TA = 25C TA = 125C 125 1.5 Output Voltage Swing vs Load Current 75 15 100 6363 G04 Shutdown Supply Current vs Supply Voltage 30 0 25 50 75 TEMPERATURE (C) Supply Current vs SHDN Voltage 1.8 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 1.8 1.4 -50 -25 6363 G02 1.6 1.9 0 4 1.8 2.0 0 8 6363 G29 2.1 1.5 VS = 5V VICM = VOCM = 0V FIVE TYPICAL UNITS 12 -16 -50 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 DIFFERENTIAL INPUT OFFSET VOLTAGE DRIFT (V/C) Supply Current vs Temperature SUPPLY CURRENT (mA) 25 0 125 6363 G01 SUPPLY CURRENT (A) COMMON MODE OFFSET VOLTAGE (mV) 100 VS = 5V POWER SUPPLY REJECTION RATIO (dB) 150 Common Mode Offset Voltage vs Temperature 16 30 VS = 5V VICM = VOCM = 0V FIVE TYPICAL UNITS PERCENTAGE OF PARTS (%) DIFFERENTIAL INPUT OFFSET VOLTAGE (V) Differential Input Offset Voltage vs Temperature 200 Applicable to all parts in the LTC6363 family. VS = 5V 125 100 75 50 25 0 PSRR+ PSRR- 1 10 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) 6363 G11 Rev. C 12 For more information www.analog.com LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Differential Output Impedance vs Frequency Turn-On and Turn-Off Transient Response Output Overdrive Recovery VSHDN VS = 5V RI = RF = 1k VINDIFF 4V/DIV 100 1V/DIV OUTPUT IMPEDANCE () 1k Applicable to the LTC6363 only. 10 VOUTDIFF 1 0.1 100k RI = RF = 1k RLOAD = 1k DIFF 1M 10M 100M FREQUENCY (Hz) 1G VOUTDIFF 5s/DIV VS = 5V VINDIFF = 24VP-P RLOAD = 2k DIFF 6363 G07 6363 G10 VS = 5V 150 0 VICM = 3.8V 0 -50 -100 TA = -40C TA = 25C TA = 125C -150 -200 -300 -400 -500 -600 -5 -4 -3 -2 -1 0 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) -700 5 6363 G12 0 -12.5 -25.0 -37.5 VICM = 3.8V -5 -4 -3 -2 -1 0 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) -50.0 -50 5 INPUT VOLTAGE NOISE DENSITY (nV/Hz) 80 70 60 50 40 30 20 10 -90 -30 30 90 150 INPUT OFFSET CURRENT DRIFT (pA/C) 6363 G30 0 25 50 75 TEMPERATURE (C) 100 VS = 5V VICM = VOCM = 0V 10 10 en 1 0.1 1 in 10 100 1k 10k 100k FREQUENCY (Hz) 1M 0.1 30M 6363 G15 125 Slew Rate vs Temperature 90 100 100 VS = 5V -25 6363 G14 INPUT CURRENT NOISE DENSITY (pA/Hz) PERCENTAGE OF PARTS (%) 12.5 Input Noise Density vs Frequency 100 0 -150 25.0 6363 G13 Typical Distribution of Input Offset Current Drift 90 VS = 5V VICM = VOCM = 0V FIVE TYPICAL UNITS 37.5 INPUT OFFSET CURRENT (nA) 50 -200 50.0 VS = 5V -100 100 6363 G09 Input Offset Current vs Temperature 85 SLEW RATE (V/s) 200 Input Bias Current vs Input Common Mode Voltage INPUT BIAS CURRENT (nA) DIFFERENTIAL INPUT OFFSET VOLTAGE (V) Differential Input Offset Voltage vs Input Common Mode Voltage 1s/DIV VS = 5V SINGLE-ENDED INPUT VOUTDIFF = 18VP-P VICM = VOCM = 0V 80 75 70 SLEW MEASURED 10% TO 90% 65 60 -50 -25 0 25 50 75 TEMPERATURE (C) 100 125 6363 G16 Rev. C For more information www.analog.com 13 LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Input Common Mode Rejection Ratio vs Frequency Frequency Response vs Closed-Loop Gain 80 VS = 5V VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF 70 100 60 50 80 GAIN (dB) COMMON MODE REJECTION RATIO (dB) 120 Applicable to the LTC6363 only. 60 40 40 AV = 0.1, RI = 2k, RF = 200 AV = 0.25, RI = 1.4k, RF = 350 AV = 0.5, RI = 1.4k, RF = 700 AV = 1, RI = 1k, RF = 1k AV = 2, RI = 700, RF = 1.4k AV = 5, RI = 400, RF = 2k AV = 10, RI = 200, RF = 2k AV = 20, RI = 100, RF = 2k AV = 100, RI = 20, RF = 2k AV = 1000, RI = 2, RF = 2k 30 20 10 0 -10 20 -20 0 1k 10k 100k 1M FREQUENCY (Hz) 10M -30 100k 100M 1M 10M FREQUENCY (Hz) 100M 300M 6363 G18 6363 G17 Open-Loop Gain and Phase vs Frequency Frequency Peaking vs Load Capacitance 10 8 OUTPUTS MEASURED AFTER SERIES RESISTORS 7 5 VS = 5V VICM = VOCM = 0V RI = RF = 1k 4 3 2 1 10 100 1000 10000 CAPACITIVE LOAD (pF) 50000 180 160 120 140 100 120 80 100 60 80 40 60 20 40 V = 5V 0 S VICM = VOCM = 0V -20 RI = RF = 1k NO LOAD -40 10 100 1k 10k 100k 1M FREQUENCY (Hz) PHASE (DEG) 6 0 GAIN PHASE 140 GAIN (dB) 9 FREQUENCY PEAKING (dB) 160 RSER = 30 RSER = 10 20 0 -20 10M 100M 6363 G20 6363 G19 Small Signal Step Response Large Signal Step Response V-OUT 1V/DIV 20mV/DIV V-OUT VS = 5V VICM = VOCM = 0V RI = RF = 1k RLOAD = 2k DIFF VINDIFF = 250mVP-P SINGLE-ENDED INPUT V+OUT 200ns/DIV 6363 G21 VS = 5V VICM = VOCM = 0V RI = RF = 1k RLOAD = 2k DIFF VINDIFF = 18VP-P SINGLE-ENDED INPUT V+OUT 500ns/DIV 6363 G22 Rev. C 14 For more information www.analog.com LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS DC Linearity 60 40 DISTORTION (dBc) 20 0 -20 VS = 5V VICM = VOCM = 0V RI = RF = 1k NO LOAD LINEAR FIT FOR -8V VOUTDIFF 8V -80 -100 -10 -8 -6 -4 -2 0 2 VOUTDIFF (V) 4 6 8 -90 -110 -120 -140 SETTLING TIME (ns) 800 HD2 2 4 8 10 12 14 VOUTDIFF (VP-P ) 16 18 20 6363 G26 HD3 HD2 -5 -4 -3 -2 -1 0 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) 6363 G25 5 BIT NUMBERS ARE REFERENCED TO AN 8VP-P INPUT ADC 700 600 500 18-BIT 400 300 0 16-BIT 2 5 Settling Time to 8VP-P Output Step 100 6 -150 100k VS = 10V, 0V RI = RF = 1k 900 200 -130 -120 6363 G24 1000 HD3 -120 1k 10k FREQUENCY (Hz) Settling Time vs Output Step -110 -110 -140 6363 G23 -100 -100 -130 HD3 -140 100 10 VS = 5V RI = RF = 1k VOUTDIFF = 18VP-P fIN = 2kHz DIFFERENTIAL INPUTS 3 4 5 6 7 DIFFERENTIAL OUTPUT STEP (VP-P) 8 VS = 10V, 0V RI = RF = 1k 4 3 2 1 DIV = 18-BIT ERROR OF AN 8VP-P INPUT ADC 120 90 60 30 1 0 150 ERROR 0 -1 -30 -2 -60 -3 ERROR (V) DISTORTION (dBc) -90 HD2 -130 VS = 5V VOCM = 0V RI = RF = 1k fIN = 2kHz SINGLE-ENDED INPUT GROUND REFERENCED -80 -90 -100 Harmonic Distortion vs Output Amplitude -70 -80 DIFFERENTIAL OUTPUT VOLTAGE (V) DIFFERENTIAL OUTPUT ERROR FROM LINEAR FIT (V) -80 -70 VS = 5V VOCM = 0V RI = RF = 1k VOUTDIFF = 18VP-P SINGLE-ENDED INPUT GROUND REFERENCED DISTORTION (dBc) -70 80 -60 Harmonic Distortion vs Input Common Mode Voltage Harmonic Distortion vs Frequency 100 -40 Applicable to the LTC6363 only. -90 VOUTDIFF -120 -4 -150 -5 TIME (0.5s/DIV) 6363 G28 6363 G27 Rev. C For more information www.analog.com 15 LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Frequency Peaking vs Load Capacitance 10 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF GAIN (dB) -6 -9 -12 -15 30 label2RSER = 30 label3 RSER = 10 9 FREQUENCY PEAKING (dB) -3 Typical Distribution of Differential Gain Error 8 25 OUTPUTS MEASURED AFTER SERIES RESISTORS 7 6 VS = 5V VICM = VOCM = 0V 5 4 3 2 PERCENTAGE OF UNITS (%) Gain vs Frequency 0 Applicable to the LTC6363-0.5 only. VS = 5V 72 UNITS 20 15 10 5 1 -18 100k 1M 10M FREQUENCY(Hz) 0 100M 10 100 1000 10000 CAPACITIVE LOAD (pF) 6363 G31 6363 G32 Typical Distribution of Differential Gain Drift 55 40 SLEW RATE (V/S) PERCENTAGE OF UNITS (%) 60 35 30 25 20 15 10 Differential Input Offset Voltage vs Input Common Mode Voltage Slew Rate vs Temperature VS = 5V 70 UNITS 45 50 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VOUTDIFF = 18VP-P SINGLE-ENDED INPUT 45 40 35 5 0 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 DIFFERENTIAL GAIN DRIFT (ppm/C) SLEW MEASURED 10% to 90% 30 -50 -25 0 25 50 75 TEMPERATURE (C) 100 6363 G34 COMMON MODE REJECTION RATIO (dB) 125 500 400 300 200 100 0 -100 -200 -300 -400 100 90 TA = 125C TA = 85C TA = 25C TA = -40C -500 -20 -16 -12 -8 -4 0 4 8 12 INPUT COMMON MODE VOLTAGE (V) 16 6363 G36 Large Signal Step Response Small Signal Step Response VS = 5V LTC6363-0.5 VS = 5V VOCM = 0V 6363 G35 Input Common Mode Rejection Ratio vs Frequency 110 6363 G33 DIFFERENTIAL INPUT OFFSET VOLTAGE (V) 50 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 DIFFERENTIAL GAIN ERROR (ppm) 50000 V+OUT V+OUT 20mV/DIV 20mV/DIV 80 70 60 50 V-OUT V-OUT 200ns/DIV 1k 10k 100k 1M FREQUENCY(Hz) 10M 100M 6363 G37 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VINDIFF = 500mVP-P SINGLE-ENDED 6363 G38 400ns/DIV 6363 G39 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VINDIFF = 36VP-P SINGLE-ENDED INPUT Rev. C 16 For more information www.analog.com LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Applicable to the LTC6363-0.5 only. Input Noise Voltage Density vs Frequency Harmonic Distortion vs Frequency -70 VS = 5V VOCM = 0V VOUTDIFF = 18VP-P SINGLE-ENDED INPUT GROUND REFERENCED -80 100 DISTORTION (dBc) INPUT VOLTAGE NOISE DENSITY (nV/Hz) 1000 10 -90 -100 -110 -120 HD3 -130 HD2 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M -140 100 10M 30M 1k 10k FREQUENCY (Hz) 6363 G40 6363 G41 Harmonic Distortion vs Output Amplitude -70 -90 HD3 -120 2 4 700 600 400 100 6 8 10 12 14 VOUTDIFF (VP-P) 16 18 0 20 0 1 DIV = 18-BIT ERROR OF AN 8VP-P INPUT ADC 150 100 120 80 90 60 60 30 ERROR 0 -1 -30 -2 -60 -3 -90 -4 8 6363 G43 VOUTDIFF -120 -150 -5 TIME (0.5s/DIV) 6363 G44 DIFFERENTIAL OUTPUT ERROR FROM LINEAR FIT (V) 1 3 4 5 6 7 DIFFERENTIAL OUTPUT STEP (VP-P) DC Linearity G = 0.5 VS = 10V, 0V 4 2 6363 G42 ERROR (V) DIFFERENTIAL OUTPUT VOLTAGE (V) 5 2 16-BIT 300 Settling Time to 8VP-P Output Step 3 18-BIT 500 200 -130 HD2 -140 G = 0.5 BIT NUMBERS ARE REFERENCED TO AN 8VP-P INPUT ADC 800 -100 -110 VS = 10V, 0V 900 SETTLING TIME (ns) DISTORTION (dBc) Settling Time vs Output Step 1000 VS = 5V VOCM = 0V fIN = 2kHz SINGLE-ENDED INPUT GROUND REFERENCED -80 100k 40 20 0 -20 -40 VS = 5V -60 V ICM = VOCM = 0V -80 NO LOAD LINEAR FIT FOR -8V VOUTDIFF +8V -100 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 VOUTDIFF (V) 6363 G45 Rev. C For more information www.analog.com 17 LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Frequency Peaking vs Load Capacitance Gain vs Frequency 10 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF GAIN (dB) 0 -3 -6 -9 25 label2RSER = 30 label3 RSER = 10 9 FREQUENCY PEAKING (dB) 3 Typical Distribution of Differential Gain Error 8 OUTPUTS MEASURED AFTER SERIES RESISTORS 7 6 VS = 5V VICM = VOCM = 0V 5 4 3 2 PERCENTAGE OF UNITS (%) 6 Applicable to the LTC6363-1 only. VS = 5V 72 UNITS 20 15 10 5 1 -12 100k 1M 10M FREQUENCY(Hz) 0 100M 10 100 1000 10000 CAPACITIVE LOAD (pF) 6363 G46 6363 G47 Typical Distribution of Differential Gain Drift 55 20 10 Differential Input Offset Voltage vs Input Common Mode Voltage 50 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VOUTDIFF = 18VP-P SINGLE-ENDED INPUT DIFFERENTIAL INPUT OFFSET VOLTAGE (V) 60 VS = 5V 71 UNITS 15 45 40 5 35 0 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 DIFFERENTIAL GAIN DRIFT (ppm/C) SLEW MEASURED 10% TO 90% 30 -50 -25 0 25 50 75 TEMPERATURE (C) 100 Input Common Mode Rejection Ratio vs Frequency COMMON MODE REJECTION RATIO (dB) 125 6363 G50 6363 G49 110 6363 G48 Slew Rate vs Temperature SLEW RATE (V/S) PERCENTAGE OF UNITS (%) 25 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 DIFFERENTIAL GAIN ERROR (ppm) 50000 500 LTC6363-1 400 VS = 5V 300 VOCM = 0V 200 100 0 -100 -200 -300 -400 -500 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 INPUT COMMON MODE VOLTAGE (V) 6363 G51 Large Signal Step Response Small Signal Step Response VS = 5V V+OUT V+OUT 100 2V/DIV 20mV/DIV 90 TA = 125C TA = 85C TA = 25C TA = -40C 80 V-OUT V-OUT 70 60 1k 10k 100k 1M FREQUENCY(Hz) 10M 100M 6363 G52 200ns/DIV VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VINDIFF = 250mVP-P SINGLE-ENDED INPUT 6363 G53 400ns/DIV VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VINDIFF = 18VP-P SINGLE-ENDED INPUT 6363 G54 Rev. C 18 For more information www.analog.com LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Applicable to the LTC6363-1 only. Input Noise Voltage Density vs Frequency Harmonic Distortion vs Frequency -70 DISTORTION (dBc) INPUT VOLTAGE NOISE DENSITY (nV/Hz) 1000 100 10 VS = 5V V = 0V -80 VOCM OUTDIFF = 18VP-P SINGLE-ENDED INPUT -90 GROUND REFERENCED -100 -110 HD2 -120 -130 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M HD3 -140 100 10M 30M 1k 10k FREQUENCY (Hz) 100k 6363 G55 6363 G56 Harmonic Distortion vs Output Amplitude -70 VS = 5V VOCM = 0V fIN = 2kHz SINGLE-ENDED INPUT GROUND REFERENCED -90 800 -100 -110 HD3 -120 2 4 600 400 6 8 10 12 14 VOUTDIFF (VP-P) 16 18 0 20 120 80 90 60 60 -1 -30 -2 -60 -3 -90 -5 TIME (0.5s/DIV) 6363 G59 DIFFERENTIAL OUTPUT ERROR FROM LINEAR FIT (V) 100 0 VOUTDIFF 8 DC Linearity 150 30 ERROR 3 4 5 6 7 DIFFERENTIAL OUTPUT STEP (VP-P) 6363 G58 ERROR (V) DIFFERENTIAL OUTPUT VOLTAGE (V) 1 DIV = 18-BIT ERROR OF AN 8VP-P INPUT ADC 1 -4 2 6363 G57 G=1 VS = 10V, 0V 4 0 16-BIT 300 100 5 2 18-BIT 500 Settling Time to 8VP-P vs Output Step 3 BIT NUMBERS ARE REFERENCED TO AN 8VP-P INPUT ADC 700 200 -130 HD2 -140 VS = 10V, 0V G=1 900 SETTLING TIME (ns) -80 DISTORTION (dBc) Settling Time vs Output Step 1000 40 20 0 -20 -40 VS = 5V VICM = VOCM = 0V NO LOAD LINEAR FIT FOR -8V VOUTDIFF +8V -60 -120 -80 -150 -100 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 VOUTDIFF (V) 6363 G60 Rev. C For more information www.analog.com 19 LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Frequency Peaking vs Load Capacitance Gain vs Frequency 10 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF GAIN (dB) 6 3 0 -3 25 label2RSER = 30 label3 RSER = 10 9 FREQUENCY PEAKING (dB) 9 Typical Distribution of Differential Gain Error 8 OUTPUTS MEASURED AFTER SERIES RESISTORS 7 6 VS = 5V VICM = VOCM = 0V 5 4 3 2 PERCENTAGE OF UNITS (%) 12 Applicable to the LTC6363-2 only. VS = 5V 72 UNITS 20 15 10 5 1 -6 100k 1M 10M FREQUENCY(Hz) 0 100M 10 100 1000 10000 CAPACITIVE LOAD (pF) 6363 G61 6363 G62 Typical Distribution of Differential Gain Drift 55 24 SLEW RATE (V/S) PERCENTAGE OF UNITS (%) 60 21 18 15 12 9 6 Differential Input Offset Voltage vs Input Common Mode Voltage Slew Rate vs Temperature VS = 5V 72 UNITS 27 50 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VOUTDIFF = 18VP-P SINGLE-ENDED INPUT 45 40 35 3 0 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 DIFFERENTIAL GAIN DRIFT (ppm/C) SLEW MEASURED 10% to 90% 30 -50 -25 0 25 50 75 TEMPERATURE (C) 100 6363 G64 COMMON MODE REJECTION RATIO (dB) 125 VS = 5V V+OUT 70 0 -100 -200 -300 -400 100M 6363 G67 TA = 125C TA = 85C TA = 25C TA = -40C -500 -10 -8 -6 -4 -2 0 2 4 6 INPUT COMMON MODE VOLTAGE (V) 8 6363 G66 V-OUT 200ns/DIV 10M 100 2V/DIV V-OUT 100k 1M FREQUENCY(Hz) 200 V+OUT 80 10k 300 LTC6363-2 VS = 5V VOCM = 0V Large Signal Step Response 20mV/DIV 90 1k 400 Small Signal Step Response 100 60 500 6363 G65 Input Common Mode Rejection Ratio vs Frequency 110 6363 G63 DIFFERENTIAL INPUT OFFSET VOLTAGE (V) 30 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 DIFFERENTIAL GAIN ERROR (ppm) 50000 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VINDIFF = 125mVP-P SINGLE-ENDED INPUT 6363 G68 400ns/DIV LTC6363 G69 VS = 5V VICM = VOCM = 0V RLOAD = 2k DIFF VINDIFF = 9VP-P SINGLE-ENDED INPUT Rev. C 20 For more information www.analog.com LTC6363 Family TYPICAL PERFORMANCE CHARACTERISTICS Applicable to the LTC6363-2 only. Input Noise Voltage Density vs Frequency Harmonic Distortion vs Frequency -70 VS = 5V VOCM = 0V VOUTDIFF = 18VP-P SINGLE-ENDED INPUT GROUND REFERENCED -80 DISTORTION (dBc) INPUT VOLTAGE NOISE DENSITY (nV/Hz) 1000 100 10 -90 -100 -110 HD2 -120 -130 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M HD3 -140 100 10M 30M 1k 10k FREQUENCY (Hz) 6363 G71 6363 G70 Harmonic Distortion vs Output Amplitude -70 -90 800 -100 -110 HD3 -120 -140 700 600 400 100 2 4 6 8 10 12 14 VOUTDIFF (VP-P) 16 18 0 20 1 0 1 DIV = 18-BIT ERROR OF AN 7VP-P INPUT ADC 120 80 90 60 60 -30 -60 -2 -3 100 0 -1 VOUTDIFF -90 40 20 0 -20 -40 -120 -80 -5 -150 -100 6363 G74 VS = 5V VICM = VOCM = 0V NO LOAD LINEAR FIT FOR -8V VOUTDIFF +8V -60 -4 TIME (0.5s/DIV) 8 DC Linearity 150 30 ERROR 3 4 5 6 7 DIFFERENTIAL OUTPUT STEP (VP-P) 6363 G73 DIFFERENTIAL OUTPUT ERROR FROM LINEAR FIT (V) G=2 VS = 10V, 0V 4 2 6363 G72 ERROR (V) DIFFERENTIAL OUTPUT VOLTAGE (V) 5 2 16-BIT 300 Settling Time to 7VP-P vs Output Step 3 18-BIT 500 200 HD2 -130 VS = 10V, 0V G=2 BIT NUMBERS ARE REFERENCED TO AN 8VP-P INPUT ADC 900 SETTLING TIME (ns) DISTORTION (dBc) Settling Time vs Output Step 1000 VS = 5V VOCM = 0V fIN = 2kHz SINGLE-ENDED INPUT GROUND REFERENCED -80 100k -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 VOUTDIFF (V) 6363 G75 Rev. C For more information www.analog.com 21 LTC6363 Family PIN FUNCTIONS (MS8,DCB) -IN (Pin 1): Inverting Input of Amplifier. In the fixed-gain LTC6363-0.5/LTC6363-1/LTC6363-2 versions, this pin connects to a precision, on-chip resistor RI. VOCM (Pin 2): Output Common Mode Reference Voltage. Voltage applied to this pin sets the output common mode voltage level. If left floating, an internal resistor divider creates a default voltage approximately halfway between V+ and V-. The VOCM pin should be decoupled to ground with a minimum of 0.1F. V+ (Pin 3): Positive Power Supply. Operational supply range is 2.8V to 11V when V- = 0V. +OUT (Pin 4): Positive Output Pin. Output capable of swinging rail-to-rail. PIN FUNCTIONS -OUT (Pin 5): Negative Output Pin. Output capable of swinging rail-to-rail. V- (Pin 6/Exposed Pad Pin 9): Negative Power Supply. Negative supply can be 0V, or taken negative as long as 2.8V (V+ - V-) 11V. SHDN (Pin 7): When the SHDN pin is floating or driven high, the LTC6363 family is in the normal (active) operating mode. When SHDN pin is connected to V- or driven low, the part is disabled and draws approximately 20A of supply current (VS = 3V). +IN (Pin 8): Noninverting Input of Amplifier. In the fixed LTC6363-0.5/LTC6363-1/LTC6363-2 versions, this pin connects to a precision,on-chip resistor RI. (LFCSP) -FB (Pin 1): Inverting Feedback Pin. The -FB pin is internally shorted out to -OUT for feedback component connection and simplified board layout. +IN (Pin 2): Noninverting Input of Amplifier. -IN (Pin 3): Inverting Input of Amplifier. +FB (Pin 4): Noninverting Feedback Pin. The +FB pin is internally shorted out to +OUT for feedback component connection and simplified board layout. V+ (Pins 5, 6, 7, 8): Positive Power Supply. Operational supply range is 2.8V to 11V when V- = 0V. VOCM (Pin 9): Output Common Mode Reference Voltage. Voltage applied to this pin sets the output common mode voltage level. If left floating, an internal resistor divider creates a default voltage approximately halfway between V+ and V-. The VOCM pin should be decoupled to ground with a minimum of 0.1F. +OUT (Pin 10): Positive Output Pin. Output capable of swinging rail-to-rail. -OUT (Pin 11): Negative Output Pin. Output capable of swinging rail-to-rail. SHDN (Pin 12): When the SHDN pin is floating or driven high, the LTC6363 family is in the normal (active) operating mode. When SHDN pin is connected to V- or driven low, the part is disabled and draws approximately 20A of supply current (VS = 3V). V- (Pins 13, 14, 15, 16): Negative Power Supply. Negative supply can be 0V, or taken negative as long as 2.8V (V+ - V-) 11V. Exposed Pad (Pin 17): Connect the exposed pad to V- or ground. Rev. C 22 For more information www.analog.com LTC6363 Family BLOCK DIAGRAMS LTC6363 MSOP and DFN 8 7 +IN 6 V- V+ 5 V- SHDN -OUT V+ V+ V- V+ V+ V+ V- V- 3.6M + 3.6M - VOCM V+ V- V- V- V- V- V+ -IN + VOCM 1 +OUT V 2 3 4 6363 BD01 LTC6363 LFCSP 16 1 2 15 -FB V+ SHDN V+ V- +IN 3.6M + V- 3.6M - V+ VOCM V- -IN -OUT V+ V+ V+ 4 13 V- V+ V- 3 14 V- +OUT V+ V- +FB V- V+ V- V+ V+ 7 6 5 V+ 12 11 10 VOCM 9 V- 8 6363 BD02 LTC6363-0.5/ LTC6363-1/ LTC6363-2 8 7 +IN V- RI V PART RI () RF () 1400 1050 700 700 1050 1400 - V 5 V- + + RF -OUT V- V+ V- V+ V+ V+ V- LTC6363-0.5 LTC6363-1 LTC6363-2 V 6 SHDN 3.6M + 3.6M - VOCM V + V- V- RI V- 1 -IN RF V- V- V- V+ 2 VOCM 3 V+ 4 +OUT 6363 BD03 Rev. C For more information www.analog.com 23 LTC6363 Family APPLICATIONS INFORMATION Functional Description G= The LTC6363 family consists of four fully differential, low power, low noise, precision amplifiers. The LTC6363 is an unconstrained, fully differential amplifier, typically used with four external resistors. The LTC6363-0.5, LTC6363-1, and LTC6363-2 (gains of 0.5, 1, and 2 respectively) are fully-differential fixed gain blocks featuring precision, laser trimmed, matched internal resistors for accurate, stable gain and excellent CMRR. The entire LT6363 family is optimized to convert a fully differential or single-ended signal to a low impedance, balanced differential output suitable for driving high performance, low power differential sigma-delta or SAR ADCs. The balanced differential nature of the amplifier also provides even-order harmonic distortion cancellation, and low susceptibility to common mode noise (e.g. power supply noise). The outputs of the LTC6363 family are capable of swinging rail-to-rail and can source up to 90mA or sink up to 40mA of current. The LTC6363 family is optimized for high bandwidth and low power applications. Load capacitances above 50pF to ground or 25pF differentially should be decoupled with 10 to 50 of series resistance from each output to prevent oscillation or ringing. SHDN Pin The LTC6363 family has a SHDN pin which, when tied to V- or driven to below VIL, will shut down amplifier operation such that only 20A (at VS = 3V) to 70A (at VS = 10V) is drawn from the supplies. Pull-down circuitry should be capable of sinking at least 12A to guarantee complete shutdown over all conditions. For normal amplifier operation, the SHDN pin should be left floating or tied to V+ or driven to above VIH. General Amplifier Applications In Figure 1, the gain to VOUTDIFF from VINP and VINM is given by: R VOUTDIFF = V+OUT - V-OUT F * ( VINP - VINM ) R I Note from the previous equation, the differential output voltage (V+OUT - V-OUT) is independent of input and output common mode voltages, or the voltage at the common mode pin. This makes the LTC6363 family ideally suited RI VINP VCM + - V+IN RF V-OUT V+ + - + VOCM VINM RF RI VOCM - + - RI V-IN RF V- 6363 F01 V+OUT Figure 1. Definitions and Terminology for pre-amplification, pre-attenuation, level shifting and conversion of single-ended signals to differential output signals for driving differential input ADCs or other devices. Output Common Mode and VOCM Pin The output common mode voltage is defined as the average of the two outputs: V + V-OUT VOUTCM = +OUT = VOCM 2 As the equation shows, the output common mode voltage is independent of the input common mode voltage, and is instead determined by the voltage on the VOCM pin, by means of an internal common mode feedback loop. The VOCM input connects to the base of a PNP transistor and an internal resistor divider network. If the VOCM pin is left open, the resistor divider creates a default voltage approximately halfway between V+ and V-. The VOCM pin can be overdriven to another voltage if desired for greater accuracy or flexibility. For example, when driving an ADC, if the ADC makes a reference available for setting the common mode voltage, it can be directly tied to the VOCM pin, as long as the ADC is capable of driving the 1.8M input resistance presented by the VOCM pin. The Electrical Characteristics table specifies the valid range that can be applied to the VOCM pin (VOUTCMR). Input Common Mode Voltage Range For all versions of the LTC6363, the input common mode voltage range, VICMR, specification refers to the voltage at the input pins of the part. The input common mode voltage range of the LTC6363-0.5, LTC6363-1 and LTC6363-2 are extended beyond that of the LTC6363 due to the resistor divider action of the on-chip resistors. Rev. C 24 For more information www.analog.com LTC6363 Family APPLICATIONS INFORMATION For LTC6363-0.5, LTC6363-1 and LTC6363-2 applications where the input is fully differential, the common mode voltage at the amplifier summing junction can be calculated using the following equation: G 1 VICM _ AMP = VICM * + VOCM * G+ 1 G+ 1 Where G is the gain, VICM_AMP is the common mode voltage at the amplifier's summing junction, VOCM is the voltage applied to the VOCM pin and VICM is the common mode voltage applied to the input pins of the LTC6363-0.5, LTC6363-1 or LTC6363-2. This equation is more useful when solved for VICM: Table 1. Valid Input Common Mode Voltage Range for FixedGain Versions (Differential Inputs) GAIN SUPPLY (V) VOCM (V) VICM (V) LTC6363-0.5 0.5 3 0.5 -1 to 4.4 LTC6363-0.5 0.5 3 1.5 -3 to 2.4 LTC6363-0.5 0.5 3 2.5 -5 to 0.4 LTC6363-0.5 0.5 5 0.5 -1 to 10.4 LTC6363-0.5 0.5 5 2.5 -5 to 6.4 LTC6363-0.5 0.5 5 4.5 -9 to 2.4 LTC6363-0.5 0.5 10 0.5 -1 to 25.4 LTC6363-0.5 0.5 10 5 -10 to 16.4 LTC6363-0.5 0.5 10 9.5 -19 to 7.4 LTC6363-1 1 3 0.5 -0.5 to 3.1 LTC6363-1 1 3 1.5 -1.5 to 2.1 LTC6363-1 1 3 2.5 -2.5 to 1.1 LTC6363-1 1 5 0.5 -0.5 to 7.1 LTC6363-1 1 5 2.5 -2.5 to 5.1 LTC6363-1 1 5 4.5 -4.5 to 3.1 LTC6363-1 1 10 0.5 -0.5 to 17.1 LTC6363-1 1 10 5 -5 to 12.6 LTC6363-1 1 10 9.5 -9.5 to 8.1 LTC6363-2 2 3 0.5 -0.25 to 2.45 LTC6363-2 2 3 1.5 -0.75 to 1.95 LTC6363-2 2 3 2.5 -1.25 to 1.45 LTC6363-2 2 5 0.5 -0.25 to 5.45 LTC6363-2 2 5 2.5 -1.25 to 4.45 LTC6363-2 2 5 4.5 -2.25 to 3.45 LTC6363-2 2 10 0.5 -0.25 to 12.95 LTC6363-2 2 10 5 -2.5 to 10.7 LTC6363-2 2 10 9.5 -4.75 to 8.45 PART VERSION * (G+ 1) - VOCM V VICM = ICM _ AMP G The minimum and maximum valid input common mode voltage can be computed using this equation by substituting for VICM_AMP the minimum and maximum VICMR specification of the LTC6363: V- and V+ -1.2V respectively. Table 1 lists various solutions to this equation. The equation changes slightly if the LTC6363-0.5, LTC6363-1 or LTC6363-2 input is single ended since now the input common mode voltage at the amplifiers's summing junction is also a function of the input signal VINP (where VINM = 0): * (G+ 1) - VOCM VINP V VICM = ICM _ AMP - G 2 In summary, the common mode voltage at the input pins of the LTC6363-0.5/LTC6363-1/LTC6363-2 (VICM) is valid if it lies within the following range: V - (G + 1) - VOCM VICM G For Differential Inputs V - (G + 1) - VOCM (V + - 1.2)(G + 1) - VOCM G V - INP VICM 2 G + (V - 1.2)(G + 1) - VOCM V - INP G 2 For Single-Ended Inputs (VINM = 0) Input Pin Protection The absolute maximum input current of the LTC6363 amplifier input pins is 10mA, as specified in the Absolute Maximum Ratings. The amplifier inside the LTC6363-0.5/ LTC6363-1/LTC6363-2 also has this same limitation but cannot be directly observed. Absolute maximum input voltage is specified for the LTC6363-0.5/LTC6363-1/ LTC6363-2 using the following equations: V - - 10mA * RI - V + + 10mA * RI + (VOUT - V - + 0.3) G (V + + 0.3 - VOUT ) G - 0.3 to + 0.3 Rev. C For more information www.analog.com 25 LTC6363 Family APPLICATIONS INFORMATION The output voltage is a variable in these equations because it affects how much current is flowing in RF. This current also flows in RI and increases the voltage which can be applied to the input without exceeding the 10mA limit on the amplifier's inputs. The absolute maximum input voltage is specified conservatively, assuming the output voltage is at V+ for the positive limit and V- for the negative limit. This simplifies the equations: RINM RS RI RF R1 VS 0.1F R1 CHOSEN SO THAT R1 || RINM = RS R2 CHOSEN TO BALANCE R1 || RS VOCM RI - + + - RF 6405 F04 1 V - - 10mA * RI - 0.3 * 1+ to G R2 = RS || R1 Figure 2. Optimal Compensation for Signal Source Impedance 1 V + + 10mA * RI + 0.3 * 1+ G According to Figure 2, the input impedance looking into the differential amp (RINM) reflects the single-ended source case, given above. Also, R2 is chosen as: Input Impedance and Loading Effects The low frequency input impedance looking into the VINP or VINM input of Figure 1 depends on how the inputs are driven. For fully differential input sources (VINP = -VINM), the input impedance seen at either input is simply: RINP = RINM = RI For single-ended inputs, due to the signal imbalance at the input, the input impedance increases over the balanced differential case. The input impedance looking into either input is: RINP =RINM = 1 1- 2 RI R F * R +R I F R1= RINM - R S R1* R S R1+ R S Effects of Resistor Pair Mismatch Figure 3 shows a circuit diagram which takes into consideration resistor mismatch. Often, resistor mismatch limits CMRR well below amplifier specifications. Assuming infinite open-loop gain, the differential output relationship is given by the equation: VOUT(DIFF) = V+OUT - V-OUT R VINDIFF * F + VCM * - VOCM * RI AVG AVG Input signal sources with non-zero impedances can also cause feedback imbalance between the pair of feedback networks. For the best performance, it is recommended that the input source impedance be compensated. If impedance matching is required at the source, a termination resistor R1 should be chosen (see Figure 2) such that: RINM * R S R2 = R1||R S = where RF is the average of RF1 and RF2, and RI is the average of RI1 and RI2. RI2 VINP VCM + - VVOCM + - VINM V+IN - + VOCM 0.1F RI1 RF2 V-OUT + - V-IN RF1 6362 F03 V+OUT Figure 3. Real-World Application with Feedback Resistor Pair Mismatch Rev. C 26 For more information www.analog.com LTC6363 Family APPLICATIONS INFORMATION AVG is defined as the average feedback factor from the outputs to their respective inputs: AVG = 1 RI1 RI2 * + 2 RI1 + R F1 RI2 + R F2 Noise is defined as the difference in the feedback factors: = RI2 RI2 + R F2 - A low impedance ground plane should be used as a reference for both the input signal source and the VOCM pin. RI1 RI1 + R F1 Here, VCM and VINDIFF are defined as the average and the difference of the two input voltages VINP and VINM, respectively: V +V VCM = INP INM 2 The LTC6363's differential input referred voltage and current noise densities are 2.9nV/Hz and 0.55pA/Hz, respectively. In addition to the noise generated by the amplifier, the surrounding feedback resistors also contribute noise. A simplified noise model is shown in Figure 4. The output noise generated by both the amplifier and the feedback components is given by the equation: e no = VINDIFF = VINP - VINM When the feedback ratios mismatch (), common mode to differential conversion occurs. Setting the differential input to zero (VINDIFF = 0), the degree of common mode to differential conversion is given by the equation: VOUTDIFF (VCM - VOCM) * /AVG In general, the degree of feedback pair mismatch is a source of common mode to differential conversion of both signals and noise. For instance, Table 2 shows the worst-case, resistor limited CMRR of the LTC6363 amplifier configured in a gain of 1 using external resistors. 2 e * 1+ R F + 2 * i * R 2 ( n F) ni RI 2 R F 2 + 2 * e nRI * + 2 * e nRF RI For example, if RF = RI = 1k, the output noise of the circuit eno = 10nV/Hz. If the circuits surrounding the amplifier are well balanced, common mode noise (envocm) does not appear in the differential output noise equation given above. The LTC6363's input referred voltage noise contributes the equivalent noise of a 510 resistor. When the feedback network is comprised of resistors whose values are larger than this, the output noise is resistor noise and amplifier current noise dominant. For feedback networks consisting Table 2. Tolerance CMRR 5% 20dB 1% 34dB 0.1% 54dB 0.01% 74dB LT5400 86dB 0.001% 94dB enRI2 RI RF enRF2 in+2 + The LTC6363-0.5/LTC6363-1/LTC6363-2 versions exhibit superior DC CMRR due to precise on-chip resistors to realize their intended gains. For example, the LTC6363-1 exhibits a DC CMRR of 100dB, which is equivalent to using resistors of 0.0005% tolerance and eliminates the additional cost and area associated with discrete components. in-2 enRI2 - eni2 RI eno2 RF enRF2 6363 F04 Figure 4. Simplified Noise Model Rev. C For more information www.analog.com 27 LTC6363 Family APPLICATIONS INFORMATION of resistors with values smaller than 510, the output noise is voltage noise dominant. larger. This further linearizes the amplifier and improves distortion at those frequencies. Lower resistor values always result in lower noise at the penalty of increased distortion due to increased loading of the feedback network on the output. Higher resistor values will result in higher output noise, but typically improved distortion due to less loading on the output. Feedback Capacitors Keep in mind that in the Electrical Characteristics table the voltage noise specification for the LTC6363-0.5/LTC63631/LTC6363-2 includes the contributions of the on chip RF and RI resistances. These resistance values were chosen to optimize noise and distortion performance while interfacing with SAR ADCs. GBW vs f-3dB Gain-bandwidth product (GBW) and -3dB frequency (f-3dB) have been specified in the Electrical Characteristics table as two different metrics for the speed of the LTC6363 family. GBW is obtained by measuring the open-loop gain of the amplifier at a specific frequency (fTEST), then calculating gain * fTEST. GBW is a parameter that depends only on the internal design and compensation of the amplifier and is a suitable metric to specify the inherent speed capability of the internal amplifier. For this reason, GBW is specified in the Electrical Characteristics table only for the LTC6363. Of more practical interest, f-3dB is the frequency at which the closed-loop gain is 3dB lower than its low frequency value. The value of f-3dB depends on the speed of the internal amplifier as well as the feedback factor. Thus the f-3dB frequency has been specified in the Electrical Characteristics table for the LTC6363 as well as LTC6363-0.5/ LTC6363-1/LTC6363-2 versions. In most amplifiers, the open-loop gain response exhibits a conventional single-pole roll-off for most of the frequencies before the unity-gain crossover frequency, and the GBW and unity-gain frequency are close to each other. However, the LTC6363 family is intentionally compensated in such a way that its GBW is significantly larger than its f-3dB in a closed loop gain of 1. This means that at lower frequencies where the amplifier inputs generally operate, the amplifier's gain and thus the feedback loop gain is When the combination of parasitic capacitances (device + PCB) at the LTC6363's inputs form a pole whose frequency lies within the closed-loop bandwidth of the amplifier, a capacitor (CF) can be added in parallel with the external feedback resistors (RF) to cancel the degradation on stability. CF will typically be at least equal to CIN,CM. CF should be chosen such that it generates a zero at a frequency close to the frequency of the pole. The LTC6363-0.5/ LTC6363-1/LTC6363-2 versions are internally stable so no CF is needed. Board Layout and Bypass Capacitors For single supply applications, it is recommended that high quality 0.1F ceramic bypass capacitors be placed directly between the V+ and the V- pin with short connections. The V- pin should be tied directly to a low impedance ground plane with minimal routing. For dual (split) power supplies, it is recommended that additional high quality 0.1F ceramic capacitors be used to bypass V+ to ground and V- to ground, again with minimal routing. Small geometry (e.g., 0603) surface mount ceramic capacitors have a much higher self-resonant frequency than leaded capacitors, and perform best with the LTC6363 family. To prevent degradation in stability response, it is highly recommended that any stray capacitance at the LTC6363's input pins, +IN and -IN, be kept to an absolute minimum by keeping printed circuit connections as short as possible. At the inputs of the LTC6363-0.5/LTC6363-1/LTC6363-2 versions, any source impedance effectively sums with the RI. Any parasitic resistance should be minimized and balanced to preserve gain accuracy and common mode rejection performance. At the output, always keep in mind the differential nature of the LTC6363 family, because it is critical that the load impedances seen by both outputs and feedback pins (stray or intended), be as balanced and symmetric as possible. This will help preserve the balanced operation of the LTC6363 family that minimizes the generation of Rev. C 28 For more information www.analog.com LTC6363 Family APPLICATIONS INFORMATION even-order harmonics and maximizes the rejection of common mode signals and noise. In this example, the maximum ambient temperature that the part is allowed to operate is: The VOCM pin should be bypassed to the ground plane with a high quality 0.1F ceramic capacitor. This will prevent common mode signals and noise on this pin from being inadvertently converted to differential signals and noise by impedance mismatches both externally and internally to the IC. To operate the device at a higher ambient temperature for the same conditions, use the LTC6363 in the 8-Lead DFN package. Power Dissipation Interfacing to ADCs Due to the wide supply voltage range, it is possible for the LTC6363 family to exceed the maximum junction temperature under certain conditions. Maximum junction temperature (TJ) is calculated from the ambient temperature (TA) and power dissipation (PD) as follows: TJ= TA+ (PD * JA). The power dissipation in the IC is a function of the supply voltage, output voltage and the load, input and feedback resistances. For a given supply voltage, the worstcase power dissipation, PD(MAX), occurs at the maximum quiescent supply current and at an output voltage which is half of either supply voltage (or the maximum swing if it is less than half the supply voltage). In this condition, the LTC6363 will supply current to the load resistors and the input and feedback resistors, RI and RF. PD(MAX)is given by: When driving an ADC, an additional passive filter should be used between the outputs of the LTC6363 family and the inputs of the ADC. Depending on the application, a singlepole RC filter will often be sufficient. The sampling process of ADCs creates a charge transient due to the switching in of the ADC sampling capacitor. This momentarily creates high frequency current pulses at the output of the amplifier as charge is transferred between amplifier and sampling capacitor. The amplifier must recover and settle from this load transient before the acquisition period has ended for a valid representation of the input signal. The RC network between the outputs of the driver and the inputs of the ADC decouples this sampling transient (see Figure 5). The capacitance serves to provide the bulk of the charge during the sampling process, and the two resistors at the outputs of the LTC6363 family are used to dampen and attenuate any charge injected by the ADC. Additionally, the RC filter band limits broadband output noise. ( )( PD(MAX) = V + - V - IS(MAX) ) V + 2 2 +2 * RL V + R 2 1+ I 2 RF +2 * RI +RF Example: An LTC6363HMS8 in the 8-Lead MSOP package has a thermal resistance of JA = 273C/W. Operating on 5V supplies, with RI = RF = 500, and driving a 500 load to ground at each output, the worst-case power dissipation is given by: PD(MAX) = (10V ) ( 2.2mA ) = 97mW ( 2.5V ) +2* 2 500 +2* ( 5V ) 2 1000 TA = TJ - (PD(MAX) * 273C/W) TA = 150C - (97mW)(273C/W) = 123.5C The selection of an appropriate filter depends on the specific ADC, and the following procedure is suggested for choosing filter component values. Begin by selecting an appropriate RC time constant for the input signal. Generally, longer time constants improve SNR at the expense of settling time. Output transient settling to 20-bit accuracy will require nearly 14 RC time constants to completely settle. To select the resistor value, remember the resistors in the decoupling network should be at least 10. Keep in mind that these resistors also serve to decouple the LTC6363 family outputs from load capacitance. Too large of a resistor will leave insufficient settling time. Too small of a resistor will not properly dampen the load transient of the sampling process, prolonging the time required for Rev. C For more information www.analog.com 29 LTC6363 Family APPLICATIONS INFORMATION 0.1F -1V VIN 8 7 +IN 6 SHDN 1050 V- 1050 -OUT V+ V+ CDIFF 3.3nF LTC6363-1 VOCM - 3.6M V- 1050 -IN 2 2.5V RFILT 30.1 V- 1050 VOCM 6V 0.1F CCM 3.3nF RFILT 30.1 + 3.6M 1 5 + 3 V 4 CCM 3.3nF AIN+ AIN- 5V 2.5V VREF VDD 20-BIT LTC2378-20 SAR ADC 1Msps GND 6363 F05 +OUT 0.1F Figure 5. Recommended Interface Solution for Driving the LTC2378-20 SAR ADC settling. For lowest distortion, choose capacitors with low dielectric absorption (such as a C0G multilayer ceramic capacitor). In general, large capacitor values attenuate the fixed nonlinear charge kickback; however very large capacitor values will detrimentally load the driver at the desired input frequency and cause driver distortion. Smaller input swings will allow for larger filter capacitor values due to decreased loading demands on the driver. This property may be limited by the particular input amplitude dependence of differential nonlinear charge kickback for the specific ADC. In some applications, placing series resistors at the inputs of the ADC may further improve distortion performance. These series resistors function with the ADC sampling capacitor to filter potential ground bounce or other high speed sampling disturbances. Additionally, the resistors limit the rise time of residual filter glitches that manage to propagate to the driver outputs. Restricting possible glitch propagation rise time to within the small signal bandwidth of the driver enables less disturbed output settling. For the specific application of LTC6363 driving the LTC2378-20 SAR ADC, the recommended component values of the RC filter are provided in Figure 5. These component values are chosen for optimal distortion and noise performance. Rev. C 30 For more information www.analog.com LTC6363 Family TEST CIRCUITS Noise gain = GN = 1+ RI RF RI , closed loop gain = G = RF RI RF LTC6363 VOS + - + VOUT - - VOS + - RI + VOCM + + VOUT - VOCM - RI 6363 TC01 RI LTC6363 RF RF RF 6363 TC02 V VOS = OUT GN V VOS = OUT GN Figure 6. Specified LTC6363 VOS Is Referred to the Summing Junction Figure 7. Specified LTC6363-0.5, LTC6363-1 and LTC6363-2 VOS Is Referred to the Summing Junction RI RF + - LTC6363 VOS + + - + VICM - VOS + VOUT - VOCM + - VCM - RF LTC6363 + + VOUT - VOCM + VICM - - 6363 TC03 RI RI RI RF RF 6363 TC04 V ICM CMRRI= 20log VOUT / GN V ICM CMRRI= 20log VOUT / G Figure 8. Specified LTC6363 CMRRI Is Referred to the Summing Junction Figure 9. Specified LTC6363-0.5, LTC6363-1 and LTC6363-2 CMRRI Is Referred to the Input Pins of the Part RI RF VOS + - + - VOCM - RF LTC6363 + + VOUT - VOCM + + - LTC6363 VOS RI + VOUT - VOCM + - VOCM - 6363 TC05 RI RI RF RF 6363 TC06 V OCM CMRRIO= 20log VOUT / G V OCM CMRRIO= 20log VOUT / GN Figure 10. Specified LTC6363 CMRRIO Is Referred to the Summing Junction Figure 11. Specified LTC6363-0.5, LTC6363-1 and LTC6363-2 CMRRIO Is Referred to the Input Pins of the Part Rev. C For more information www.analog.com 31 LTC6363 Family TEST CIRCUITS Noise gain = GN = 1+ RF RI , closed loop gain = G = RF RI + VS - RI + VS - RF LTC6363 RF LTC6363 VOS VOS RI + + - + - + VOUT - VOCM - + VOUT - VOCM - RI 6363 TC07 RI + RF RF 6363 TC08 + VS - + VS - 2 * V S PSRR = 20log VOUT / GN 2 * V S PSRR = 20log VOUT / GN Figure 12. Specified LTC6363 PSRR Is Referred to the Summing Junction Figure 13. Specified LTC6363-0.5, LTC6363-1 and LTC6363-2 PSRR Is Referred to the Summing Junction + VS - RI + VS - RF LTC6363 RF LTC6363 VOSCM RI + VOSCM + VOCM + - + - VOCM - RI - 6363 TC09 RI RF RF 6363 TC10 + VS - + VS - 2 * V S PSRRCM= 20log VOSCM 2 * V S PSRRCM= 20log VOSCM Figure 14. Specified LTC6363 PSRRCM Is Defined as the Ratio of the Change in Supply Voltage to the Change in Common Mode Offset Voltage Figure 15. Specified LTC6363-0.5, LTC6363-1 and LTC6363-2 PSRRCM Is Defined as the Ratio of the Change in Supply Voltage to the Change in Common Mode Offset Voltage Rev. C 32 For more information www.analog.com LTC6363 Family TEST CIRCUITS Noise gain = GN = 1+ RI RF RI , closed loop gain = G = RF RI RF RF LTC6363 en + - + en + - + VOUT - VOCM - RI + - 6363 TC15 RF RF en = + VOUT - VOCM RI RI LTC6363 6363 TC16 VOUT,rms GN en = Figure 16. Specified LTC6363 en Is Referred to the Summing Junction VOUT,rms G Figure 17. Specified LTC6363-0.5, LTC6363-1 and LTC6363-2 en Is Referred to the Input Pins of the Part Rev. C For more information www.analog.com 33 LTC6363 Family TYPICAL APPLICATIONS Single-Ended-to-Differential Conversion of a 5VP-P, 2.5V Referenced Input with Gain of AV = 2 to Drive an ADC 5V 5V VIN 0.1F 0V 0V -1V 8 VIN V-OUT 7 +IN 6 SHDN 700 5 V- 1400 3.3nF V+ V+ 30.1 + 3.6M AIN+ LTC6363-2 VOCM V- 2 2.5V VOCM 3 6V 0.1F 2.5V AIN- 30.1 3.3nF V- 1400 700 -IN 3.3nF - 3.6M 1 -OUT 5V 2.5V VREF VDD 20-BIT LTC2378-20 SAR ADC 1Msps GND 6363 TA02 V+ 4 +OUT MEASURED PERFORMANCE: INPUT: fIN = 2kHz, -1dBFS SNR: 101.3dB THD: -113dB 5V 0.1F V+OUT 0V Differentially Driving an ADC with VIN = 10VP-P and Gain of AV = 1 5V 5V VINP 0.1F 0V 0V -1V 8 VINP 7 +IN 6 SHDN 1050 V- 1050 3.3nF 30.1 V- 1050 5V -IN 2 2.5V 3.3nF - 3.6M VINM AIN+ LTC6363-1 VOCM 1 -OUT + 3.6M 0V 5 V+ V+ VINM V-OUT AIN- 30.1 3.3nF V- 1050 VOCM 6V 0.1F V 2.5V VREF VDD 20-BIT LTC2378-20 SAR ADC 1Msps GND 6363 TA03 + 3 5V 4 +OUT 5V 0.1F V+OUT MEASURED PERFORMANCE: INPUT: fIN = 2kHz, -1dBFS SNR: 102dB THD: -115dB 0V Rev. C 34 For more information www.analog.com LTC6363 Family TYPICAL APPLICATIONS Differentially Driving a Pipeline ADC with AV = 1 100 VCM = 0.9V V+OUT 0.4V 3.3V 1k VOCM SHDN 0.1F INPUT BW = 1.2MHz FULL SCALE = 2VP-P LTC6363 1.8V 1.5nF 5 30.1 - + 1.5nF 30.1 + - 1k 1V 0.1F 1.4V 1k 5 1.5nF AIN+ AIN- VDD VCM 16 BIT LTC2160 PIPELINE ADC 25Msps GND 6363 TA04 1k 1.4V VIN V-OUT -1V 0.4V MEASURED PERFORMANCE FOR LTC6363 DRIVING LTC2160: INPUT: fIN = 2kHz, -1dBFS SNR: 77dB HD2: -100.0dBc HD3: -100.2dBc THD: -96.5dB Differential Line Driver Connected in Gain of AV = 2 1V VIN 0.1F -1V VIN -5V 8 7 +IN 6 SHDN 700 1V V- 1400 -OUT 3.6M + -1V 3.6M - 49.9 LTC6363-2 VOCM V- V-OUT V+ V+ 1 5 2 2.5V 6363 TA05 V- 1400 700 -IN 100 49.9 VOCM 5V 0.1F 3 V+ 0.1F 4 +OUT 1V V+OUT -1V Rev. C For more information www.analog.com 35 LTC6363 Family TYPICAL APPLICATIONS LTC6363 Used as Lowpass Filter/Driver with 10VP-P Single-Ended Input, Driving a SAR ADC 3.3nF *3-POLE LOWPASS FILTER f-3dB = 40kHz, CIN = 3.3nF f-3dB = 60kHz, CIN REMOVED 3.3nF 49.9 5V 6V VIN VCM 1.4k 0.1F 5V -5V VIN 536 324 3.3nF 536 + - *CIN 3.3nF 5V 2.5V VREF VDD 3.3nF 30.1 - + LTC6363 2.5V 0.1F VCM 0V AIN+ 3.3nF 30.1 AIN- 0.1F 18 BIT LTC2378-18 SAR ADC 3.3nF 1Msps GND 6363 TA06 536 324 536 -1V 1.4k 3.3nF 3.3nF 3.3nF 5V MEASURED PERFORMANCE: INPUT: fIN = 2kHz, -1dBFS, f-3dB = 40kHz SNR: 100.5dB THD: -111.2dB 0V 49.9 Differential AV = 1/9 Configuration Using an LT(R)5400 Quad-Matched Resistor Network 72V -72V VIN 1 2 3 4 LT5400-8 9k 1k 1k 9k 15pF 8 VOCM 7 6 5 0.1F SHDN 10V 9V - + V+OUT LTC6363 + - V-OUT 15pF 1V 9V 1V 6363 TA07 Rev. C 36 For more information www.analog.com LTC6363 Family TYPICAL APPLICATIONS LTC6363 Low Power, Low Noise, I and Q Signal Amplifier/Filter and LTC5599 Modulator 1k 220pF 49.9 2.8V 0.1F 249 I CHANNEL DIFFERENTIAL INPUT VIN,CM = 1.4V 220pF 499 249 VOCM LTC6363 49.9 220pF 499 249 220pF 1.4V 1.4V 1.4V 1.4V 1k 220pF Q CHANNEL DIFFERENTIAL INPUT VIN,CM = 1.4V 220pF VOCM 220pF 249 499 249 CSB BBPQ BBMQ GNDRF MODULATOR OUTPUT 49.9 - + GND SPI FROM MCU 2.2nF LTC6363 220pF SCLK BBMI 1.5nF 49.9 + - 0.1F SDI LTC5599 RF 0.1F 249 LOL SDO BBPI 49.9 2.8V 499 LOC TEMP 220pF 220pF 39nH TTCK 49.9 1k 249 15pF 1nF 2.2nF VCC VCTRL EN 220pF 249 2.2nF + - 0.1F 2.8V 49.9 - + 450MHz LO INPUT 0dB SPI BUS 220pF 220pF 2.2nF 49.9 1k 220pF 6363 TA09 Rev. C For more information www.analog.com 37 LTC6363 Family PACKAGE DESCRIPTION MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660 Rev G) 0.889 0.127 (.035 .005) 5.10 (.201) MIN 3.20 - 3.45 (.126 - .136) 3.00 0.102 (.118 .004) (NOTE 3) 0.65 (.0256) BSC 0.42 0.038 (.0165 .0015) TYP 8 7 6 5 0.52 (.0205) REF RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) 3.00 0.102 (.118 .004) (NOTE 4) 4.90 0.152 (.193 .006) DETAIL "A" 0 - 6 TYP GAUGE PLANE 0.53 0.152 (.021 .006) DETAIL "A" 1 2 3 4 1.10 (.043) MAX 0.86 (.034) REF 0.18 (.007) SEATING PLANE 0.22 - 0.38 (.009 - .015) TYP 0.65 (.0256) BSC 0.1016 0.0508 (.004 .002) MSOP (MS8) 0213 REV G NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Rev. C 38 For more information www.analog.com LTC6363 Family PACKAGE DESCRIPTION DCB Package 8-Lead Plastic DFN (2mm x 3mm) (Reference LTC DWG # 05-08-1718 Rev A) 0.70 0.05 1.35 0.05 3.50 0.05 1.65 0.05 2.10 0.05 PACKAGE OUTLINE 0.25 0.05 0.45 BSC 1.35 REF RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED R = 0.115 TYP R = 0.05 5 TYP 2.00 0.10 (2 SIDES) 0.40 0.10 8 1.35 0.10 1.65 0.10 3.00 0.10 (2 SIDES) PIN 1 NOTCH R = 0.20 OR 0.25 x 45 CHAMFER PIN 1 BAR TOP MARK (SEE NOTE 6) (DCB8) DFN 0106 REV A 4 0.200 REF 1 0.23 0.05 0.45 BSC 0.75 0.05 1.35 REF 0.00 - 0.05 BOTTOM VIEW--EXPOSED PAD NOTE: 1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE Rev. C For more information www.analog.com 39 LTC6363 Family PACKAGE DESCRIPTION RD Package 16-Lead Plastic LFCSP (3mm x 3mm) (Reference LTC DWG # 05-08-1648 Rev B) BOTTOM VIEW--EXPOSED PAD 3.00 0.05 (4 SIDES) R = 0.115 TYP 0.75 0.05 PIN 1 R = 0.10 TYP 15 0.45 REF PIN 1 TOP MARK (NOTE 6) 16 0.40 0.10 1 2 1.30 0.10 (4-SIDES) (RD16) LFCSP 1218 REV B 0.23 0.05 0.10 REF 0.00 - 0.05 0.50 BSC NOTE: 1. DRAWING NOT TO SCALE 2. ALL DIMENSIONS ARE IN MILLIMETERS 3. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 4. EXPOSED PAD SHALL BE SOLDER PLATED 5. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 0.70 0.05 3.50 0.05 1.30 0.05 2.10 0.05 (4 SIDES) PACKAGE OUTLINE 0.25 0.05 0.50 BSC RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS Rev. C 40 For more information www.analog.com LTC6363 Family REVISION HISTORY REV DATE DESCRIPTION A 11/16 Common Mode Noise Voltage Density updated from 14nvHz to 20nvHz. Erroneous notes removed from Supply Current vs Supply Voltage graph. SHDN pin description updated. PAGE NUMBER 3 6 10, 11 Web links updated. All Revision History added. 21 B 01/18 Family of parts added. All C 02/19 Added LFCSP Package All Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications moreby information www.analog.com subject to change without notice. No license For is granted implication or otherwise under any patent or patent rights of Analog Devices. 41 LTC6363 Family TYPICAL APPLICATION Single-Ended-to-Differential Conversion of a 20VP-P Ground-Referenced Input with Gain of AV = 0.5 to Drive an ADC 10V 5V VIN 0.1F -10V VIN V-OUT 0V -1V 8 7 +IN 6 SHDN 1400 V- 700 5 3.3nF V+ V+ 30.1 + 3.6M VOCM LTC6363-0.5 -IN 2 2.5V 30.1 V- VOCM 6V 0.1F 700 V AIN- 3.3nF 5V 2.5V VREF VDD 20-BIT LTC2378-20 SAR ADC 1Msps GND 6363 TA08 + 3 AIN+ 3.3nF - 3.6M V- 1400 1 -OUT 4 +OUT MEASURED PERFORMANCE: INPUT: fIN = 2kHz, -1dBFS SNR: 102.3dB THD: -114.1dB 5V 0.1F V+OUT 0V RELATED PARTS PART NUMBER DESCRIPTION COMMENTS Fully Differential Amplifiers LTC6362 Precision, Low Power Rail-to-Rail Input/Output Differential Op Amp/SAR ADC Driver 1mA, -116dBc Distortion at 1kHz, 8VP-P Output ADA4940-1/ADA4940-2 Ultralow Power, Low Distortion, Fully Differential ADC 1.25mA, -96dBc Distortion at 1MHz, 2VP-P Output Drivers LTC1992/LTC1992-X 3MHz to 4MHz Fully Differential Input/Output Amplifiers Internal Feedback Resistors Available (G =1, 2, 5,10) LT1994 70MHz Low Noise, Low Distortion Fully Differential Input/Output Amplifier/Driver 13mA, -94dBc Distortion at 1MHz, 2VP-P Output AD8475 Precision, Selectable Gain Funnel Amplifier Internal Feedback Resistors (G = 0.4, 0.8) AD8476 Low Power, Unity Gain ADC Driver/Amplifier 330A, -126dBc Distortion at 10kHz, 1ppm/C Gain Drift LT6350 Low Noise, Single-Ended to Differential Converter/ ADC Driver 4.8mA, -97dBc Distortion at 100kHz, 4VP-P Output LTC6246/LTC6247/ LTC6248 Single/Dual/Quad 180MHz Rail-to-Rail Low Power Op 1mA/Amplifier, 4.2nV/Hz Amps Operational Amplifiers Matched Resistor Networks LT5400 Precision Quad Matched Resistor Networks Ratios = 1:1, 1:4, 1:5, 1:9, 1:10 ADCs LTC2378-20 20-Bit, 1Msps, Low Power SAR ADC with 0.5ppm INL 2.5V Supply, Differential Input, 104dB SNR, 5V Input Range, DGC, Pin Compatible Family in MSOP-16 and 4mm x 3mm DFN-16 Packages LTC2379-18/LTC2378-18 18-Bit, 1.6Msps/1Msps/500ksps/250ksps Serial, LTC2377-18/LTC2376-18 Low Power ADC 2.5V Supply, Differential Input, 101.2dB SNR, 5V Input Range, DGC, Pin Compatible Family in MSOP-16 and 4mm x 3mm DFN-16 Packages AD4020 1.8V Supply, Differential Input, 100.5dB SNR, 5V Input Range, 3mm x 3mm LFCSP and MSOP-10 Packages 20-Bit, 1.8Msps, Low Power, Precision SAR ADC AD4003/AD4007/AD4011 18-Bit, 2Msps/1Msps/500ksps Precision, Differential SAR ADCs 1.8V Supply, Differential Input, 100.5dB SNR, 5V Input Range, 3mm x 3mm LFCSP and MSOP-10 Packages AD7691 18-Bit, 1.5LSB INL, 250ksps PulSAR Differential ADC 2.3V to 5V Supply, Differential Input, 101.5dB SNR, 5V Input Range, 3mm x 3mm LFCSP and MSOP-10 Packages AD7984 18-Bit, 1.33Msps PulSAR 10.5mW ADC in MSOP/LFCSP 2.5V Supply, Differential Input, 98.5dB SNR, 5V Input Range, 3mm x 3mm LFCSP and MSOP-10 Packages Rev. C 42 02/19 www.analog.com ANALOG DEVICES, INC. 2015-2019