LTC201A/LTC202/LTC203 Micropower, Low Charge Injection, Quad CMOS Analog Switches U FEATURES DESCRIPTIO The LTC(R)201A, LTC202, and LTC203 are micropower, quad CMOS analog switches which typically dissipate only 250W from 15V supplies and 40W from a single 5V supply. The switches have 65 typical on resistance and a very high off resistance. A break-before-make characteristic, inherent in these switches, prevents the shorting of two channels. With a supply voltage of 15V, the signal range is 15V. These switches have special charge compensation circuitry which greatly reduces charge injection to a maximum of 25pC (15V supplies). Micropower Operation Single 5V or 15V Supply Operation Low Charge Injection Low RON Low Leakage Guaranteed Break Before Make Latch Resistant Design TTL/CMOS Compatible Improved Second Source for DG2O1A/DG202 U KEY SPECIFICATIO S Supply Current ................... I+ = 40A, I- = 5A Max Charge Injection 15V Supplies ................................. 25pC Max Single 5V Supply .................................. 2pC Typ RON ............................................................. 65 Typ Signal Range .................................................... 15V , LTC and LT are registered trademarks of Linear Technology Corporation. U The LTC201A, LTC202, and LTC203 are designed for applications such as programmable gain amplifiers, analog multiplexers, sample-and-hold circuits, precision charge switching and remote switching. These three devices are differentiated by the type of switch action, as shown in the logic table. TYPICAL APPLICATIO Micropower 100Hz to 1MHz V-to-F Converter VIN OV TO 5V 7V TO 10V 1.5M 100k 220k* 1N4148 12k 100Hz TRIM (240k* TYP) 50k + 100 1/2 LT1178 1F + 47k 1/2 LT (R)1178 LT1004-2.5 - 1F NC 10k 2N3906 2N3904 - 0.01F 2k VDD CLK CD4024 74C14 0.33F 3pF RESET Q7 VSS 10M LINEARITY IS 0.02% QUIESCENT CURRENT IS 90A SUPPLY CURRENT IS 360A AT 1MHz *1%FILM RESISTOR FOUT 2F S1 S3 V+ IN2 IN3 IN1 IN4 GND V- S4 S2 D4 D2 LTC201A/LTC202 0.022F D1 D3 500pF POLYSTYRENE LTC201A/202/203*TA01 201a23fb 1 LTC201A/LTC202/LTC203 W W W AXI U U ABSOLUTE RATI GS U U W PACKAGE/ORDER I FOR ATIO (Note 1) TOP VIEW Voltages Referenced to V - V+ ........................................................................ 44V GND ..................................................................... 25V Digital Inputs, S, D (Note 2) ....... - 2V to (V + + 2V) or 20mA, Whichever Occurs First Current Any Input Except S or D ................................... 30mA Continuous S or D ............................................ 20mA Peak S or D (Pulsed at 1ms, 10% Duty Cycle Max) ................................... 70mA ESD Susceptibility (Note 3) ...................................... 4kV Power Dissipation (Plastic) ............................... 500mW Power Dissipation (Ceramic) ............................. 900mW Operating Temperature Range LTC201AC/LTC202C/LTC203C ................ 0C to 70C LTC201AM/LTC202M/LTC203M .......-55C to 125C Storage Temperature Range ..................-65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C IN1 1 16 IN2BP C D1 2 15 D2 S1 3 14 S2 V- 4 13 V + GND 5 12 NC S4 6 11 S3 D4 7 10 D3 IN4 8 9 IN3 N PACKAGE 16-LEAD PDIP TJMAX = 110C, JA - 120C/W S PACKAGE 16-LEAD PLASTIC SO TJMAX = 110C, JA - 130C/W J PACKAGE 16-LEAD CERDIP TJMAX = 150C, JA - 100C/W LOGIC TABLE INX LTC201A IN1 TO IN4 LTC202 IN1 TO IN4 0 ON OFF OFF ON 1 OFF ON ON OFF ORDER PART NUMBER LTC201ACN LTC201ACS LTC202CN LTC202CS LTC203CN LTC203CS LTC203 IN1, IN4 IN2, IN3 ORDER PART NUMBER LTC201AMJ LTC201ACJ LTC202MJ LTC202CJ LTC203MJ LTC203CJ OBSOLETE PACKAGE Consider the N16 or SO-16 Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. U DIGITAL A D DC ELECTRICAL CHARACTERISTICS + The denotes the specifications which apply over full operating temperature range, otherwise specifications are at TA = 25C. V = 15V, V - = -15V, GND = 0V. PARAMETER CONDITIONS Analog Signal Range RON LTC201AM/LTC202M/ LTC203M MIN TYP MAX LTC201AC/LTC202C/ LTC203C MIN TYP MAX UNITS 15 15 V 110 125 125 160 VS = 10V TMIN ID = 1mA 25C 65 TMAX 110 65 160 RON vs VS 20 20 % RON vs Temperature 0.5 0.5 %/C 5 5 RON Match VS = 0V, IDS = 1mA Off Input Leakage IS (OFF) VD = 14V, VS = 14V Switch Off 0.01 1 100 0.01 % 5 100 nA nA 201a23fb 2 LTC201A/LTC202/LTC203 U DIGITAL A D DC ELECTRICAL CHARACTERISTICS+ The denotes the specifications which apply over full operating temperature range, otherwise specifications are at TA = 25C. V = 15V, V - = -15V, GND = 0V. PARAMETER CONDITIONS Off Output Leakage ID (0FF) VD = 14V, VS = 14V Switch Off On Channel Leakage lD (ON) VD = VS = 14V Switch On LTC201AM/LTC202M/ LTC203M MIN TYP MAX LTC201AC/LTC202C/ LTC203C MIN TYP MAX 0.01 1 100 0.01 5 100 nA nA 0.02 1 0.02 5 nA 200 nA 200 Input High Voltage VINH Input Low Voltage VINL 0.8 0.8 V 1 1 A Input High or Low Current IINH and IINL VIN = 15V, 0V 2.4 2.4 UNITS V CS (OFF) 5 5 pF CD (OFF) 12 12 pF CD, CS (ON) 30 30 pF I+ All Logic Inputs Tied Together VIN = 0V or 4.0V 16 40 16 60 I- 0.1 5 A 60 A 5 A 10 A 0.1 10 40 AC ELECTRICAL CHARACTERISTICS V+ = 15V, V - = -15V, GND = 0V unless otherwise noted. PARAMETER CONDITIONS tON VS = 2V, RL = 1k, CL = 35pF LTC201AM/LTC202M/ LTC203M MIN TYP MAX LTC201AC/LTC202C/ LTC203C MIN TYP MAX 290 400 290 400 210 300 210 300 tOFF tOPEN Off Isolation 20 VS = 2VP-P, RL = 1k, f 100kHz Crosstalk Charge Injection OINJ RS = 0, CL = 1000pF, VS = 0V Total Harmonic Distortion THD VS = 2VP-P, RL = 10k 85 ns ns 85 ns 75 75 dB 90 90 dB 5 0.01 20 UNITS 25 8 0.01 25 pC % 201a23fb 3 LTC201A/LTC202/LTC203 U DIGITAL A D DC ELECTRICAL CHARACTERISTICS+ The denotes the specifications which apply over full operating temperature range, otherwise specifications are at TA = 25C. V = 5V, V- = GND = 0V unless otherwise noted. PARAMETER LTC201AM/LTC202M/ LTC203M MIN TYP MAX CONDITIONS Analog Signal Range RON VS = 1.5V, +3V ID = 0.25mA 0 5 TMIN 25C 280 450 RON vs Temperature Off Input Leakage IS (OFF) VD = 4V, 1V; VS = 1V, 4V (Note 4) Switch Off Off Output Leakage ID (0FF) On Channel Leakage lD (ON) Switch On V 525 650 20 % 0.5 0.5 %/C 5 5 0.01 1 100 0.01 0.01 1 100 VD = VS = 1V, 4V (Note 4) 5 520 20 0.01 VD = 4V, 1V; VS = 1V, 4V (Note 4) Switch Off 280 650 RON vs VS VS = 2.5V, IDS = 0.25mA 0 450 TMAX RON Match LTC201AC/LTC202C/ LTC203C MIN TYP MAX UNITS 0.01 0.01 1 200 5 nA 100 nA +5 nA 100 nA 5 nA 200 nA Input High Voltage VINH Input Low Voltage VINL 0.8 0.8 V 1 1 A Input High or Low Current IINH and IINL VIN = 5V, 0V 2.4 % 2.4 CS (OFF) 5 V 5 pF CD (OFF) 12 12 pF CD, CS (ON) 30 30 pF I+ All Logic Inputs Tied Together VIN = 0V OR 4.0V 8 20 8 30 20 A 30 A AC ELECTRICAL CHARACTERISTICS V + = 5V, V - = GND = 0V unless otherwise noted. PARAMETER CONDITIONS tON VS = 2V, RL = 1k, CL = 35pF LTC201AM/LTC202M/ LTC203M MIN TYP MAX LTC201AC/LTC202C/ LTC203C MIN TYP MAX 450 600 450 600 ns 190 300 190 300 ns tOFF tOPEN Off Isolation 100 VS = 2VP-P, RL = 1k, f = 100Hz Crosstalk Charge Injection OINJ RS = 0, CL = 1000pF, VS = 2.5V Total Harmonic Distortion THD VS = 2VP-P, RL = 10k Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Signals on S, D, or IN exceeding V + or V - will be clamped by internal diodes. Limit forward diode current to maximum current rating. 250 100 UNITS 250 ns 75 75 dB 90 90 dB 2 2 pC 0.01 0.01 % Note 3: In-circuit ESD on the switch pins (S or D) exceeds 4kV (see test circuit). Note 4: Leakage current with a single 5V supply is guaranteed by correlation with the 15V leakage current. 201a23fb 4 LTC201A/LTC202/LTC203 U W TYPICAL PERFOR A CE CHARACTERISTICS RON vs VS Over Supply Voltage T = 25C 250 I A = 1mA D RON vs VS Over Temperature VSUPPLY = 5V, 0V 100 5V 25C 60 15V V + = 15V V - = - 15V ID = 1mA 20 20V 8 0 - 15 - 12 - 9 - 6 - 3 12 16 20 0 0 3 VS(V) V + = 5V V - = 0V 9 - 10 V + = 15V - V = - 15V - 40 0 VS(V) 5 10 15 3 4 5 LT201_202_203 * TPC03 V + = 5V V - = 0V TA = 25C ALL LOGIC INPUTS TIED TOGETHER 300 270 240 210 180 150 180 150 120 120 90 90 60 60 30 30 0 3 9 6 12 15 VIN(V) LT201_202_203 * TPC04 2 Supply Current vs Logic Input Voltage 0 -5 1 VS(V) I+ (A) I+ (A) 0 - 10 0 12 15 210 10 - 50 - 15 6 V + = 15V 300 V - = - 15V 270 TA = 25C ALL LOGIC INPUTS 240 TIED TOGETHER 30 - 30 - 55C Positive Supply Current vs Logic Input Voltage 50 TA = 25C 40 C = 1000p-F L - 20 25C LT201_202_203 * TPC02 QINJ vs VS Over Supply Voltage 20 300 100 LT201_202_203 * TPC01 V + = 5V V - = - 5V 125C - 55C 50 0 4 VS (V) 400 200 40 10V 0 - 20 - 16 - 12 - 8 - 4 RON () 150 100 QINJ (pC) V + = 5V 500 V - = 0V ID = 1mA 125C 80 RON () RON () 200 RON vs VS Over Temperature 0 0 1 3 2 4 5 VIN(V) LT201_202_203 * TPC05 LT201_202_203 * TPC06 201a23fb 5 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO Switching Time Test Circuit Switch output waveform shown for VS = constant with logic input waveform as shown. Note that VS may be + or - as per switching time test circuit. VO is the steady state output switch on. Feedthrough via gate capacitance may result in spikes at leading and trailing edge of output waveform. Switching Time Test Circuit SWITCH INPUT LOGIC "1" = SW ON NO LOGIC INPUT tr < 20ns tf < 20ns 3V NC LOGIC INPUT tr < 20ns tf < 20ns 3V S1 D1 IN1 RL 1k VO VS = 2V 50% 0V LOGIC "0" = SW ON 0V VS SWITCH OUTPUT 0V CL 35pF VO = VS RL RL + rDS(ON) LOGIC INPUT 50% SWITCH INPUT SWITCH OUTPUT (REPEAT TEST FOR IN2, IN3 AND IN4) VO tON 0.9 VO LT201_202_203 * AI02 0.9 tOFF LT201_202_203 * AI01 Charge Injection Test Circuit RGEN VGEN SX DX INX VO VO CL = 1000pF VO 3V OFF NC LT201_202_203 * AI03 0V 3V NO 0V ON ON ON ON OFF VO IS THE MEASURED VOLTAGE ERROR DUE TO CHARGE INJECTION. THE ERROR VOLTAGE IN COULOMBS IS Q = CL * VO LT201_202_203 * AI04 201a23fb 6 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO OIRR-Off Isolation Test Circuit C SIGNAL GENERATOR CCRR-Channel to Channel Crosstalk Test Circuit C 15V SIGNAL GENERATOR VS V + VS = 2VP-P f = 100kHz CHAN A ANALYZER CHAN B OIRR = 20 LOG V- GND VIN C = 0.001F//0.1F CHIP CAPACITORS C - 15V VL IN2 CCRR = 20 LOG VIN VS2 NC V- GND LT201_202_203 * AI05 50 VD1 VD2 RL 1k VO VD + VS1 V IN1 VIN VD RL 1k C = 0.001F//0.1F CHIP CAPACITORS VS = 2VP-P f = 100kHz NX CHAN A ANALYZER CHAN B 3 15V VS1 C - 15V VD2 LT201_202_203 * AI06 VIN VIN NC NO 3V 0V NC NO 3V 0V Micropower, 4.5V to 15V Input, Voltage Doubler Using the LTC203 In-Circuit ESD Test Circuit ANY SOURCE OR DRAIN PIN ESD TESTER 1.5k VOUT = 2VIN LTC201A/ LTC202/ LTC203 1F V+ S OR D LTC203 D1 15V V+ VIN 4kV 100pF 0.1F S1 1N4148 POWER APPLIED OR OPEN CIRCUIT S3 D3 V- 1F 330k V- - 15V GND 0.1F 1/4 74C14 14 GND S2 D2 IN3 1M IN2 PER MIL-STD-883C METHOD 3015.2 LT201_202_203 * AI07 10F 1000pF IN1 IN4 D4 S4 LT201_202_203 * AI08 VIN IQ VOUT, NO LOAD ROUT 4.5V 20A 8.988V(12mV Error) 1.2k 15V 130A 29.96V(40mV Error) 600 201a23fb 7 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO Micropower, 4.5V to 15V, Voltage Inverter Using the LTC203 LTC203 10 13 3 VIN 5 330k 14 1 16 14 74C14 9 1M 10F VIN IQ 4.5V 15V 15A 125A 8 1000pF VOUT, NO LOAD 7 V+ 2 D3 S3 1F GND S2 D2 15 IN3 IN2 IN1 IN4 S4 D4 V- 4 ROUT -4.494V(6mV Error) -14.975V(25mV Error) 11 S1 D1 6 VOUT = - VIN 1F 1.1k 520 LT201_202_203 * AI09 Quad 12-Bit Sample-and-Hold 5V LT1014 OR LT1079 + VOUT1 - IN1 NC SAMPLE HOLD IN2 NO SAMPLE HOLD IN3 LTC201A/ LTC202/ LTC203 + V + VOUT2 - IN4 VIN1 S1 D1 0.01F VIN2 S2 + D2 VOUT3 0.01F VIN3 S3 - D3 0.01F VIN4 S4 + D4 VOUT4 0.01F GND V- - - 5V LT1014 LT1079 SAMPLE-TO-HOLD OFFSET 0.6mV 0.6mV APERTURE TIME 300ns 300ns AQUISITION TIME TO 0.01% (0 TO 2V STEP) SLEW RATE (0 TO 5V STEP) 14s 27s 0.4V/s 0.07V/s 0.8mV/ms 0.6mV/ms 1.6mA 180A DROOP RATE SUPPLY CURRENT LT201_202_203 * AI10 201a23fb 8 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO Ultra Low Noise, Low Drift Chopper Amplifier 15V 74C14 INPUT 10 D3 7 1 IN1 D4 16 IN2 9 8 IN3 IN4 14 S2 1M 3 S1 1000pF LTC203 S3 11 S4 NC 6 V+ 12 15V 13 1F V- GND 4 5 D2 D1 15 15V 2 100k 15V - 15V + 1F - + LT1097 OUTPUT LT1028 - - 15V 470pF 10k 100k - 15V 10 0.47F NOISE: 40nVP-P 0.1Hz TO 10Hz VOS: 1V DRIFT: 0.05V/C R2 GAIN: +1 R1 AVOL: > 108 Ib: 25nA R2 10k R1 10 LT201_202_203 * AI11 Noise in a 0.1 to 10Hz Bandwidth 50nV 10 sec 201a23fb 9 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO Bipolar (AC) Input V/F Converter 0.01F* 3 S1 15V 6 1 IN1 S4 16 9 IN3 IN2 8 IN4 11 S3 15 D2 74C04 LTC203 D1 D4 2 1N4148 NC 12 7 V+ V- 13 GND 4 D3 5 10 0.1F OUTPUT 0kHz TO 10kHz S2 14 15V 1N4148 2k LT1004-2.5 1N4148 10k INPUT 10V 36.5k 1%** - 15V 1N4148 15V 15V - + LT1056 - + 1k 15V 15V 15V LT1012 A = 10 10k 3.6k - 3.6k + - 15V LT1011 2N2369 1N4148 - 15V - 15V * POLYSTYRENE 50ppm/C DRIFT 0.04% LINEARITY ** TRW/IRC MTR/5/+ 120 1N4148 33k 100pF 10k 0.33F LT201_202_203 * AI13 201a23fb 10 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO Micropower Thermocouple Temperature to Frequency Converter 6V 0.02F NC TYPE K THERMOCOUPLE "A" 6V +V K - + Q1 2N3904 - 100k 1M LT1025 GND 10k 6V + R- 6V Q2 2N3906 LT1049 74C14 100k C1 100pF 6.81k** C4 300pF C3 0.47F 100C 1.5k TRIM OUTPUT 0C to 100C D.C. to 1kHz 240k 6V 6.8F 3 S1 14 S2 1 IN1 LT1004-1.2V 9 8 IN3 IN4 S3 S4 GND D3 D4 16 IN2 11 6 LTC203 NOTES: * POLYSTYRENE D1 ** IRC/TRW MTR/5/+ 120ppm 2 360A OPERATING CURRENT 4.75V TO 10V SUPPLY VOLTAGE FOR 4mV FULL SCALE "GENERAL PURPOSE" V F DELETE LT1025 AND THERMOCOUPLE AND DRIVE POINT "A" D2 15 NC 12 V+ 13 V- 4 5 10 7 6V LT201_202_203 * AI14 C2 390pF* 201a23fb 11 LTC201A/LTC202/LTC203 U W U U APPLICATIO S I FOR ATIO Precision Current Sensing in Supply Rails 15V 74C14 IIN RSHUNT SHUNT CAN BE IN POSITIVE OR NEGATIVE SUPPLY LEAD 1M VOUT 1000pF 1F S1 S2 IN1 IN2 IN3 IN4 S3 S4 V+ V- GND D3 D4 15V - 15V LTC203 D1 D2 NC 1F LT201_202_203 * AI15 Precision Voltage Divide by 2 Circuit VOUT = VIN/2 1F VIN 4.5V TO 20V S1 S2 V+ NC V- GND S3 S4 IN3 IN4 D3 D4 LTC203 D1 D2 IN1 IN2 1F 74C14 330k 1M 10F 1000pF LT201_202_203 * AI16 201a23fb 12 LTC201A/LTC202/LTC203 U PACKAGE DESCRIPTIO J Package 16-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) CORNER LEADS OPTION (4 PLCS) .005 (0.127) MIN .023 - .045 (0.584 - 1.143) HALF LEAD OPTION .840 (21.336) MAX 16 15 14 13 12 11 10 9 .220 - .310 (5.588 - 7.874) .025 (0.635) RAD TYP .045 - .065 (1.143 - 1.65) FULL LEAD OPTION 1 2 3 4 5 6 7 8 .200 (5.080) MAX .300 BSC (7.62 BSC) .015 - .060 (0.380 - 1.520) .008 - .018 (0.203 - 0.457) 0 - 15 NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .125 (3.175) MIN .045 - .065 (1.143 - 1.651) .014 - .026 (0.360 - 0.660) .100 (2.54) BSC J16 0801 OBSOLETE PACKAGE 201a23fb 13 LTC201A/LTC202/LTC203 U PACKAGE DESCRIPTIO N Package 16-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .770* (19.558) MAX 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 .255 .015* (6.477 0.381) .300 - .325 (7.620 - 8.255) .008 - .015 (0.203 - 0.381) ( +.035 .325 -.015 +0.889 8.255 -0.381 NOTE: 1. DIMENSIONS ARE ) .130 .005 (3.302 0.127) .045 - .065 (1.143 - 1.651) .020 (0.508) MIN .065 (1.651) TYP .120 (3.048) MIN .100 (2.54) BSC INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) .018 .003 (0.457 0.076) N16 1002 201a23fb 14 LTC201A/LTC202/LTC203 U PACKAGE DESCRIPTIO S Package 16-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .386 - .394 (9.804 - 10.008) NOTE 3 .045 .005 .050 BSC 16 N 15 14 13 12 11 10 9 N .245 MIN .160 .005 .150 - .157 (3.810 - 3.988) NOTE 3 .228 - .244 (5.791 - 6.197) 1 .030 .005 TYP 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 .010 - .020 x 45 (0.254 - 0.508) 2 3 4 5 6 .053 - .069 (1.346 - 1.752) .008 - .010 (0.203 - 0.254) NOTE: 1. DIMENSIONS IN .014 - .019 (0.355 - 0.483) TYP 8 .004 - .010 (0.101 - 0.254) 0 - 8 TYP .016 - .050 (0.406 - 1.270) 7 .050 (1.270) BSC S16 0502 INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 201a23fb Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 15 LTC201A/LTC202/LTC203 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC221/LTC222 Micropower, Low Charge Injection, Quad CMOS Analog Switches Parallel Controlled with Data Latches LTC1380/LTC1393 8-Channel/4-Channel Differential Analog Multiplexer with SMBus Interface 3V to 15V, RON = 35 Single-Ended/70 Differential LTC1390/LTC1391 8-Channel, Analog Multiplexer with Serial Interface 3V to 15V, RON = 45, Low Charge Injection LT1675/LT1675-1 250MHz, Triple and Single RGB Multiplexer 100MHz Pixel Switching, 1100V/s Slew Rate 201a23fb 16 Linear Technology Corporation LW/TP 1102 1K REV B * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com LINEAR TECHNOLOGY CORPORATION 1991