Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
Comlinear® CLC1603, CLC3603, CLC3613
Single and Triple, 1.1mA, 200MHz Ampliers
Exar Corporation www.exar.com
48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 - Fax. +1 510 668-7001
FEATURES
n 0.1dB gain atness to 30MHz
n 0.01%/0.03˚ differential gain/phase
n 200MHz -3dB bandwidth at G = 2
n 140MHz large signal bandwidth
n 450V/μs slew rate
n 1.1mA supply current (enabled)
n 0.35mA supply current (disabled)
n 100mA output current
n Fully specied at 5V and ±5V supplies
n CLC1603: Pb-free SOT23-6
n CLC3603: Pb-free SOIC-16
n CLC3613: Pb-free SOIC-14
APPLICATIONS
n RGB video line drivers
n Portable Video
n Line drivers
n Set top box
n Active lters
n Cable drivers
n Imaging applications
n Radar/communication receivers
General Description
The COMLINEAR CLC1603 (single with disable), CLC3603 (triple with disable),
and CLC3613 (triple) are high-performance, current feedback ampliers that
provide 240MHz unity gain bandwidth, ±0.1dB gain atness to 30MHz, and
450V/μs slew rate while consuming only 1.1mA of supply current. This high
performance exceeds the requirements of NTSC/PAL/HDTV video applications.
These COMLINEAR high-performance ampliers also provide ample output
current to drive multiple video loads.
The COMLINEAR CLC1603, CLC3603, and CLC3613 are designed to operate
from ±5V or +5V supplies. The CLC1603 and CLC3603 offer a enable/disable
feature to save power. While disabled, the outputs are in a high-impedance
state to allow for multiplexing applications. The combination of high-speed,
low-power, and excellent video performance make these ampliers well suited
for use in many general purpose, high-speed applications including set top
boxes, high-denition video, active lters, and cable driving applications.
Typical Application - Driving Dual Video Loads
Ordering Information
Part Number Package Disable Option Pb-Free RoHS Compliant Operating Temperature Range Packaging Method
CLC1603IST6X SOT23-6 Yes Yes Yes -40°C to +85°C Reel
CLC3613ISO14X SOIC-14 No Yes Yes -40°C to +85°C Reel
CLC3613ISO14 SOIC-14 No Yes Yes -40°C to +85°C Rail
CLC3603ISO16X SOIC-16 Yes Yes Yes -40°C to +85°C Reel
CLC3603ISO16 SOIC-16 Yes Yes Yes -40°C to +85°C Rail
Moisture sensitivity level for all parts is MSL-1.
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 2/22 Rev 1D
CLC1603 Pin Assignments
Pin No. Pin Name Description
1OUT Output
2-VSNegative supply
3 +IN Positive input
4-IN Negative input
5DIS
Disable. Enabled if pin is left oating or pulled
above VON, disabled if pin is grounded or pulled
below VOFF.
6+VSPositive supply
CLC3603 Pin Assignments
Pin No. Pin Name Description
1-IN1 Negative input, channel 1
2+IN1 Positive input, channel 1
3-VSNegative supply
4-IN2 Negative input, channel 2
5+IN2 Positive input, channel 2
6-VSNegative supply
7+IN3 Positive input, channel 3
8 -IN3 Negative input, channel 3
9DIS3
Disable pin for channel 3. Enabled if pin is left
oating or pulled above VON, disabled if pin is
grounded or pulled below VOFF.
10 OUT3 Output, channel 3
11 +VSPositive supply
12 OUT2 Output, channel 2
13 DIS2
Disable pin for channel 2. Enabled if pin is left
oating or pulled above VON, disabled if pin is
grounded or pulled below VOFF.
14 +VSPositive supply
15 OUT1 Output, channel 1
16 DIS1
Disable pin for channel 2. Enabled if pin is left
oating or pulled above VON, disabled if pin is
grounded or pulled below VOFF.
Disable Pin Truth Table
Pin High* ( > (+Vs - 1.5V)) Low ( < (+Vs - 3.5V))
DIS Enabled Disabled
*Default Open State
CLC1603 Pin Conguration
2
3
6
4
+IN
+VS
-IN
1
-VS
OUT
-
+5
DIS
CLC3603 Pin Conguration
2
3
413
14
15
16
OUT1
-VS
DIS1
+VS
1
+IN1
-IN1
5
6
7
+IN3
-VS
+IN2
10
11
12
OUT2
+VS
OUT3
-IN2 DIS2
8
-IN3
9
DIS3
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 3/22 Rev 1D
CLC3613 Pin Assignments
Pin No. Pin Name Description
1NC No Connect
2NC No Connect
3 NC No Connect
4+VSPositive supply
5+IN1 Positive input, channel 1
6-IN1 Negative input, channel 1
7OUT1 Output, channel 1
8 OUT3 Output, channel 3
9-IN3 Negative input, channel 3
10 +IN3 Positive input, channel 3
11 -VSNegative supply
12 +IN2 Positive input, channel 2
13 -IN2 Negative input, channel 2
14 OUT2 Output, channel 2
CLC3613 Pin Conguration
2
3
4 11
12
13
14
-IN2
NC
OUT2
+IN2
1
NC
NC
5
6
7
OUT1
-IN1
+IN1
8
9
10 +IN3
-IN3
OUT3
+VS -VS
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 4/22 Rev 1D
Absolute Maximum Ratings
The safety of the device is not guaranteed when it is operated above the “Absolute Maximum Ratings”. The device
should not be operated at these “absolute” limits. Adhere to the “Recommended Operating Conditions” for proper de-
vice function. The information contained in the Electrical Characteristics tables and Typical Performance plots reect the
operating conditions noted on the tables and plots.
Parameter Min Max Unit
Supply Voltage 0 14 V
Input Voltage Range -Vs -0.5V +Vs +0.5V V
Continuous Output Current 100 mA
Reliability Information
Parameter Min Typ Max Unit
Junction Temperature 150 °C
Storage Temperature Range -65 150 °C
Lead Temperature (Soldering, 10s) 300 °C
Package Thermal Resistance
6-Lead SOT23 177 °C/W
14-Lead SOIC 88 °C/W
16-Lead SOIC 68 °C/W
Notes:
Package thermal resistance (qJA), JDEC standard, multi-layer test boards, still air.
ESD Protection
Product SOT23-6 SOIC-14 SOIC-16
Human Body Model (HBM) (1) 2kV 2kV 2kV
Charged Device Model (CDM) 1kV 1kV 1kV
Notes:
1. 0.8kV between the input pairs +IN and -IN pins only. All other pins are 2kV.
Recommended Operating Conditions
Parameter Min Typ Max Unit
Operating Temperature Range -40 +85 °C
Supply Voltage Range 4.5 12 V
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 5/22 Rev 1D
Electrical Characteristics at +5V
TA = 25°C, +Vs = 5V, -VS = GND, Rf = Rg =1.2kΩ, RL = 100Ω to +VS/2, G = 2; unless otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
Frequency Domain Response
UGBW Unity Gain Bandwidth G = +1, VOUT = 0.5Vpp, Rf = 2.5kΩ 210 MHz
BWSS -3dB Bandwidth G = +2, VOUT = 0.5Vpp 180 MHz
BWLS Large Signal Bandwidth G = +2, VOUT = 1Vpp 160 MHz
BW0.1dBSS 0.1dB Gain Flatness G = +2, VOUT = 0.5Vpp 15 MHz
Time Domain Response
tR, tFRise and Fall Time VOUT = 1V step; (10% to 90%) 3 ns
tS
Settling Time to 0.1% VOUT = 1V step 18 ns
Settling Time to 0.01% VOUT = 1V step 40 ns
OS Overshoot VOUT = 0.2V step 1 %
SR Slew Rate 1V step 350 V/µs
Distortion/Noise Response
HD2 2nd Harmonic Distortion VOUT = 1Vpp, 5MHz -60 dBc
HD3 3rd Harmonic Distortion VOUT = 1Vpp, 5MHz -51 dBc
THD Total Harmonic Distortion VOUT = 1Vpp, 5MHz 50 dB
DGDifferential Gain NTSC (3.58MHz), AC-coupled, RL = 150Ω 0.01 %
DPDifferential Phase NTSC (3.58MHz), AC-coupled, RL = 150Ω 0.04 °
IP3 Third Order Intercept VOUT = 1Vpp, 10MHz 26 dBm
SFDR Spurious Free Dynamic Range VOUT = 1Vpp, 5MHz 58 dBc
enInput Voltage Noise > 1MHz 4nV/√Hz
inInput Current Noise > 1MHz, Inverting 15 pA/√Hz
> 1MHz, Non-Inverting 15 pA/√Hz
XTALK Crosstalk Channel-to-channel 5MHz 56 dB
DC Performance
VIO Input Offset Voltage 0.5 mV
dVIO Average Drift 6µV/°C
Ibn Input Bias Current - Non-Inverting 2 µA
dIbn Average Drift 40 nA/°C
Ibi Input Bias Current - Inverting 0.4 µA
dIbi Average Drift 10 nA/°C
PSRR Power Supply Rejection Ratio DC 60 dB
ISSupply Current per channel 0.9 mA
Disable Characteristics - CLC1603, CLC3603
TON Turn On Time 100 ns
TOFF Turn Off Time 2.25 μs
VOFF Power Down Input Voltage DIS pin, disabled if pin is grounded or pulled
below VOFF = +Vs - 3.5V Disabled if < (+Vs - 3.5V) V
VON Enable Input Voltage DIS pin, enabled if pin is left open or pulled
above VON = +Vs - 1.5V Enabled if > (+Vs - 1.5V) V
ISD Disable Supply Current DIS pin is grounded 0.15 mA
Input Characteristics
RIN Input Resistance Non-inverting 4MΩ
Inverting 350 Ω
CIN Input Capacitance 1.0 pF
CMIR Common Mode Input Range 1.5 to
3.5 V
CMRR Common Mode Rejection Ratio DC 55 dB
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 6/22 Rev 1D
Electrical Characteristics at +5V continued
TA = 25°C, +Vs = 5V, -VS = GND, Rf = Rg =1.2kΩ, RL = 100Ω to +VS/2, G = 2; unless otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
Output Characteristics
ROOutput Resistance Closed Loop, DC 0.02 Ω
VOUT Output Voltage Swing RL = 100Ω 1.4 to
3.6 V
IOUT Output Current ±140 mA
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 7/22 Rev 1D
Electrical Characteristics at ±5V
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
Frequency Domain Response
UGBW Unity Gain Bandwidth G = +1, VOUT = 0.5Vpp, Rf = 2.5kΩ 240 MHz
BWSS -3dB Bandwidth G = +2, VOUT = 0.5Vpp 200 MHz
BWLS Large Signal Bandwidth G = +2, VOUT = 2Vpp 120 MHz
BW0.1dBSS 0.1dB Gain Flatness G = +2, VOUT = 0.5Vpp 30 MHz
Time Domain Response
tR, tFRise and Fall Time VOUT = 2V step; (10% to 90%) 4ns
tS
Settling Time to 0.1% VOUT = 2V step 18 ns
Settling Time to 0.01% VOUT = 2V step 35 ns
OS Overshoot VOUT = 0.2V step 1 %
SR Slew Rate 2V step 450 V/µs
Distortion/Noise Response
HD2 2nd Harmonic Distortion VOUT = 2Vpp, 5MHz -67 dBc
HD3 3rd Harmonic Distortion VOUT = 2Vpp, 5MHz -57 dBc
THD Total Harmonic Distortion VOUT = 2Vpp, 5MHz, RL = 150Ω 55 dB
DGDifferential Gain NTSC (3.58MHz), AC-coupled, RL = 150Ω 0.01 %
DPDifferential Phase NTSC (3.58MHz), AC-coupled, RL = 150Ω 0.03 °
IP3 Third Order Intercept VOUT = 0.5Vpp, 10MHz 35 dBm
SFDR Spurious Free Dynamic Range VOUT = 1Vpp, 5MHz 58 dBc
enInput Voltage Noise > 1MHz 4nV/√Hz
inInput Current Noise > 1MHz, Inverting 15 pA/√Hz
> 1MHz, Non-Inverting 15 pA/√Hz
XTALK Crosstalk Channel-to-channel 5MHz 56 dB
DC Performance
VIO Input Offset Voltage (1) -4 0.7 4 mV
dVIO Average Drift 6µV/°C
Ibn Input Bias Current - Non-Inverting (1) -5 2 5 µA
dIbn Average Drift 40 nA/°C
Ibi Input Bias Current - Inverting (1) -5 2 5 µA
dIbi Average Drift 10 nA/°C
PSRR Power Supply Rejection Ratio (1) DC 50 75 dB
ISSupply Current (1) CLC1603 1.1 2.5 mA
CLC3603, CLC3613 3.3 6.5 mA
Disable Characteristics - CLC1603, CLC3603
TON Turn On Time 250 ns
TOFF Turn Off Time 2.25 μs
VOFF Power Down Input Voltage DIS pin, disabled if pin is grounded or pulled
below VOFF = +Vs - 3.5V Disabled if < (+Vs - 3.5V) V
VON Enable Input Voltage DIS pin, enabled if pin is left open or pulled
above VON = +Vs - 1.5V Enabled if > (+Vs - 1.5V) V
ISD Disable Supply Current (1) DIS pin is grounded, CLC1603 0.11 0.5 mA
DIS pin is grounded, CLC3603 0.3 0.5 mA
Input Characteristics
RIN Input Resistance Non-inverting 4MΩ
Inverting 350 Ω
CIN Input Capacitance 1.0 pF
CMIR Common Mode Input Range ±4.0 V
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 8/22 Rev 1D
Electrical Characteristics at ±5V continued
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
CMRR Common Mode Rejection Ratio (1) DC 50 60 dB
Output Characteristics
ROOutput Resistance Closed Loop, DC 0.1 Ω
VOUT Output Voltage Swing RL = 100Ω (1) -3.0 ±3.5 +3.0 V
IOUT Output Current ±270 mA
Notes:
1. 100% tested at 25°C
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 9/22 Rev 1D
Typical Performance Characteristics
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Frequency Response vs. VOUT Frequency Response vs. Temperature
Frequency Response vs. CLFrequency Response vs. RL
Non-Inverting Frequency Response Inverting Frequency Response
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
G = 1
R
f
= 2.5kΩ
G = 2
G = 5
G = 10
V
OUT
= 0.5V
pp
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
G = -1
G = -2
G = -5
G = -10
V
OUT
= 0.5V
pp
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
C
L
= 1000pF
R
s
= 5Ω
C
L
= 500pF
R
s
= 5Ω
C
L
= 100pF
R
s
= 15Ω
C
L
= 50pF
R
s
= 15Ω
C
L
= 20pF
R
s
= 20Ω
V
OUT
= 0.5V
pp
-6
-5
-4
-3
-2
-1
0
1
2
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
R
L
= 5kΩ
V
OUT
= 0.5V
pp
R
L
= 1kΩ
R
L
= 150Ω
R
L
= 50Ω
R
L
= 25Ω
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 1V
pp
V
OUT
= 2V
pp
V
OUT
= 4V
pp
-7
-6
-5
-4
-3
-2
-1
0
1
2
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
+ 85degC
-40degC
+ 25degC
VOUT = 0.2Vpp
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 10/22 Rev 1D
Typical Performance Characteristics
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Frequency Response vs. VOUT at +Vs = 5V, -VS = GND Frequency Response vs. Temp. at +Vs = 5V, -VS = GND
Frequency Response vs. CL at +Vs = 5V, -VS = GND Frequency Response vs. RL at +Vs = 5V, -VS = GND
Non-Inverting Frequency Response at +Vs = 5V, -VS=GND Inverting Frequency Response at +Vs = 5V, -VS = GND
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
G = 1
R
f
= 2.5kΩ
G = 2
G = 5
G = 10
V
OUT
= 0.5V
pp
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
G = -1
G = -2
G = -5
G = -10
V
OUT
= 0.5V
pp
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
C
L
= 1000pF
R
s
= 5Ω
C
L
= 500pF
R
s
= 5Ω
C
L
= 100pF
R
s
= 15Ω
C
L
= 50pF
R
s
= 15Ω
C
L
= 20pF
R
s
= 20Ω
V
OUT
= 0.5V
pp
-6
-5
-4
-3
-2
-1
0
1
2
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
R
L
= 5kΩ
V
OUT
= 0.5V
pp
R
L
= 1kΩ
R
L
= 150Ω
R
L
= 50Ω
R
L
= 25Ω
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 1V
pp
V
OUT
= 2V
pp
V
OUT
= 3V
pp
-7
-6
-5
-4
-3
-2
-1
0
1
2
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
+ 85degC
-40degC
+ 25degC
V
OUT
= 0.2V
pp
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 11/22 Rev 1D
Typical Performance Characteristics - Continued
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Closed Loop Output Impedance vs Frequency Input Voltage Noise
CMRR vs. Frequency PSRR vs. Frequency
Gain Flatness Gain Flatness at +Vs = 5V, -VS = GND
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 2V
pp
R
L
= 150Ω
R
f
= 1.1kΩ
R
f
= 1.2kΩ
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.1 110 100 1000
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 2V
pp
R
L
= 150Ω
R
f
= 1.1kΩ
R
f
= 1.2kΩ
CMRR (dB)
Frequency (Hz)
10k 100k 1M 10M 100M
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
VS = ±5.0V
PSRR (dB)
Frequency (MHz)
0.01 0.1 1 10 100
-70
-60
-50
-40
-30
-20
-10
0
Output Resistance (Ω)
Frequency (MHz)
0.01 0.1 1 10 100
0.01
0.1
1
10
100
VS = ±5.0V
2
3
4
5
6
7
0.0001 0.001 0.01 0.1 1
Input Voltage Noise (nV/√Hz)
Frequency (MHz)
100
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 12/22 Rev 1D
Typical Performance Characteristics - Continued
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Crosstalk vs. Frequency
2nd Harmonic Distortion vs. VOUT 3rd Harmonic Distortion vs. VOUT
2nd Harmonic Distortion vs. RL 3rd Harmonic Distortion vs. RL
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
0 5 10 15 20
Distortion (dBc)
Frequency (MHz)
R
L
= 100Ω
V
OUT
= 2V
pp
R
L
= 1kΩ
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
0 5 10 15 20
Distortion (dBc)
Frequency (MHz)
R
L
= 100Ω
V
OUT
= 2V
pp
R
L
= 1kΩ
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
0.5 0.75 11.25 1.5 1.75 22.25 2.5
Distortion (dBc)
Output Amplitude (V
pp
)
10MHz
5MHz
1MHz
RL = 100Ω
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
0.5 0.75 11.25 1.5 1.75 22.25 2.5
Distortion (dBc)
Output Amplitude (V
pp
)
10MHz
5MHz
1MHz
RL = 100Ω
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
0.1 110 100
Crosstalk (dB)
Frequency (MHz)
V
OUT
= 2V
pp
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 13/22 Rev 1D
Typical Performance Characteristics - Continued
TA = 25°C, +Vs = 5V, -VS = -5V, Rf = Rg =1.2kΩ, RL = 100Ω to GND, G = 2; unless otherwise noted.
Differential Gain & Phase AC Coupled Output Differential Gain & Phase DC Coupled Output
Small Signal Pulse Response at +Vs = 5V, -VS = GND Large Signal Pulse Response at +Vs = 5V, -VS = GND
Small Signal Pulse Response Large Signal Pulse Response
-0.125
-0.1
-0.075
-0.05
-0.025
0
0.025
0.05
0.075
0.1
0.125
010 20 30 40 50 60 70 80 90 100
Voltage (V)
Time (ns)
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
010 20 30 40 50 60 70 80 90 100
Voltage (V)
Time (ns)
V
OUT
= 4V
pp
V
OUT
= 2V
pp
2.375
2.4
2.425
2.45
2.475
2.5
2.525
2.55
2.575
2.6
2.625
010 20 30 40 50 60 70 80 90 100
Voltage (V)
Time (ns)
1
1.5
2
2.5
3
3.5
4
010 20 30 40 50 60 70 80 90 100
Voltage (V)
Time (ns)
V
OUT
= 2V
pp
V
OUT
= 1V
pp
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
-0.7 -0.5 -0.3 -0.1 0.1 0.3 0.5 0.7
Diff Gain (%) / Diff Phase (°)
Input Voltage (V)
DG
R
L
= 150Ω
AC coupled into 220µF
DP
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
-0.7 -0.5 -0.3 -0.1 0.1 0.3 0.5 0.7
Diff Gain (%) / Diff Phase (°)
Input Voltage (V)
DG
R
L
= 150Ω
DC coupled
DP
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 14/22 Rev 1D
General Information - Current Feedback
Technology
Advantages of CFB Technology
The CLCx603 Family of ampliers utilize current feedback
(CFB) technology to achieve superior performance. The
primary advantage of CFB technology is higher slew rate
performance when compared to voltage feedback (VFB)
architecture. High slew rate contributes directly to better
large signal pulse response, full power bandwidth, and
distortion.
CFB also alleviates the traditional trade-off between
closed loop gain and usable bandwidth that is seen with
a VFB amplier. With CFB, the bandwidth is primarily
determined by the value of the feedback resistor, Rf. By
using optimum feedback resistor values, the bandwidth
of a CFB amplier remains nearly constant with different
gain congurations.
When designing with CFB ampliers always abide by these
basic rules:
• Use the recommended feedback resistor value
• Do not use reactive (capacitors, diodes, inductors, etc.)
elements in the direct feedback path
• Avoid stray or parasitic capacitance across feedback
resistors
• Follow general high-speed amplier layout guidelines
• Ensure proper precautions have been made for driving
capacitive loads
Figure 1. Non-Inverting Gain Conguration with First
Order Transfer Function
VOUT
VIN
= − Rf
Rg
+1Eq. 2
1+Rf
Zo(jω)
VIN
VOUT
Zo*Ierr
Ierr
RL
Rf
x1
Rg
Figure 2. Inverting Gain Conguration with First Order
Transfer Function
CFB Technology - Theory of Operation
Figure 1 shows a simple representation of a current
feedback amplier that is congured in the traditional
non-inverting gain conguration.
Instead of having two high-impedance inputs similar to a
VFB amplier, the inputs of a CFB amplier are connected
across a unity gain buffer. This buffer has a high impedance
input and a low impedance output. It can source or sink
current (Ierr) as needed to force the non-inverting input
to track the value of Vin. The CFB architecture employs
a high gain trans-impedance stage that senses Ierr and
drives the output to a value of (Zo(jω) * Ierr) volts. With
the application of negative feedback, the amplier will
drive the output to a voltage in a manner which tries to
drive Ierr to zero. In practice, primarily due to limitations
on the value of Zo(jω), Ierr remains a small but nite
value.
A closer look at the closed loop transfer function (Eq.1)
shows the effect of the trans-impedance, Zo(jω) on the
gain of the circuit. At low frequencies where Zo(jω) is very
large with respect to Rf, the second term of the equation
approaches unity, allowing Rf and Rg to set the gain. At
higher frequencies, the value of Zo(jω) will roll off, and
the effect of the secondary term will begin to dominate.
The -3dB small signal parameter species the frequency
where the value Zo(jω) equals the value of Rf causing the
gain to drop by 0.707 of the value at DC.
For more information regarding current feedback
ampliers, visit www.cadeka.com for detailed application
notes, such as AN-3:
The Ins and Outs of Current Feedback
Ampliers
.
VOUT
VIN
=1+Rf
Rg
+1Eq. 1
1+Rf
Zo(jω)
VIN VOUT
Zo*Ierr
Ierr
Rg
RL
Rf
x1
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 15/22 Rev 1D
Application Information
Basic Operation
Figures 3, 4, and 5 illustrate typical circuit congurations for
non-inverting, inverting, and unity gain topologies for dual
supply applications. They show the recommended bypass
capacitor values and overall closed loop gain equations.
Figure 3. Typical Non-Inverting Gain Circuit
Figure 4. Typical Inverting Gain Circuit
Figure 5. Typical Unity Gain (G=1) Circuit
CFB ampliers can be used in unity gain congurations.
Do not use the traditional voltage follower circuit, where
the output is tied directly to the inverting input. With a CFB
amplier, a feedback resistor of appropriate value must be
used to prevent unstable behavior. Refer to gure 5 and
Table 1. Although this seems cumbersome, it does allow a
degree of freedom to adjust the passband characteristics.
Feedback Resistor Selection
One of the key design considerations when using a CFB
amplier is the selection of the feedback resistor, Rf. Rf is
used in conjunction with Rg to set the gain in the traditional
non-inverting and inverting circuit congurations. Refer to
gures 3 and 4. As discussed in the Current Feedback
Technology section, the value of the feedback resistor has
a pronounced effect on the frequency response of the
circuit.
Table 1, provides recommended Rf and associated Rg
values for various gain settings. These values produce
the optimum frequency response, maximum bandwidth
with minimum peaking. Adjust these values to optimize
performance for a specic application. The typical
performance characteristics section includes plots that
illustrate how the bandwidth is directly affected by the
value of Rf at various gain settings.
Gain
(V/V Rf (Ω) Rg (Ω) ±0.1dB BW
(MHz)
-3dB BW
(MHz)
12.5k -- 42 240
21.2k 1.2k 30 200
51.2k 300 8 70
Table 1: Recommended Rf vs. Gain
In general, lowering the value of Rf from the recommended
value will extend the bandwidth at the expense of
additional high frequency gain peaking. This will cause
increased overshoot and ringing in the pulse response
characteristics. Reducing Rf too much will eventually
cause oscillatory behavior.
Increasing the value of Rf will lower the bandwidth.
Lowering the bandwidth creates a atter frequency
response and improves 0.1dB bandwidth performance.
This is important in applications such as video. Further
increase in Rf will cause premature gain rolloff and
adversely affect gain atness.
+
-
Rf
0.1μF
6.8μF
Output
G = - (Rf/Rg)
For optimum input offset
voltage set R1 = Rf || Rg
Input
+Vs
-Vs
0.1μF
6.8μF
RL
Rg
R1
+
-
Rf
0.1μF
6.8μF
Output
G = 1
Rf is required for CFB amplifiers
Input
+Vs
-Vs
0.1μF
6.8μF
RL
+
-
Rf
0.1μF
6.8μF
Output
G = 1 + (Rf/Rg)
Input
+Vs
-Vs
Rg
0.1μF
6.8μF
RL
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 16/22 Rev 1D
Driving Capacitive Loads
Increased phase delay at the output due to capacitive
loading can cause ringing, peaking in the frequency
response, and possible unstable behavior. Use a series
resistance, RS, between the amplier and the load to
help improve stability and settling performance. Refer to
Figure 6.
Figure 6. Addition of RS for Driving
Capacitive Loads
Table 2 provides the recommended RS for various
capacitive loads. The recommended RS values result
in <=0.5dB peaking in the frequency response. The
Frequency Response vs. CL plot, on pages 9 and 10,
illustrate the response of the CLCx603 Family.
CL (pF) RS (Ω) -3dB BW (MHz)
10 40 350
50 20 200
100 15 140
Table 1: Recommended RS vs. CL
For a given load capacitance, adjust RS to optimize the
tradeoff between settling time and bandwidth. In general,
reducing RS will increase bandwidth at the expense of
additional overshoot and ringing.
Parasitic Capacitance on the Inverting Input
Physical connections between components create
unintentional or parasitic resistive, capacitive, and
inductive elements.
Parasitic capacitance at the inverting input can be
especially troublesome with high frequency ampliers.
A parasitic capacitance on this node will be in parallel
with the gain setting resistor Rg. At high frequencies, its
impedance can begin to raise the system gain by making
Rg appear smaller.
In general, avoid adding any additional parasitic
capacitance at this node. In addition, stray capacitance
across the Rf resistor can induce peaking and high
frequency ringing. Refer to the Layout Considerations
section for additional information regarding high speed
layout techniques.
Overdrive Recovery
An overdrive condition is dened as the point when either
one of the inputs or the output exceed their specied
voltage range. Overdrive recovery is the time needed for
the amplier to return to its normal or linear operating
point. The recovery time varies, based on whether the
input or output is overdriven and by how much the range
is exceeded. The CLCx603 Family will typically recover
in less than 30ns from an overdrive condition. Figure 7
shows the CLC1603 in an overdriven condition.
Figure 7. Overdrive Recovery
Power Dissipation
Power dissipation should not be a factor when operating
under the stated 100 ohm load condition. However,
applications with low impedance, DC coupled loads
should be analyzed to ensure that maximum allowed
junction temperature is not exceeded. Guidelines listed
below can be used to verify that the particular application
will not cause the device to operate beyond it’s intended
operating range.
Maximum power levels are set by the absolute maximum
junction rating of 150°C. To calculate the junction
temperature, the package thermal resistance value
ThetaJA (ӨJA) is used along with the total die power
dissipation.
TJunction = TAmbient + (ӨJA × PD)
+
-
Rf
Input
Output
Rg
Rs
CLRL
-5
-4
-3
-2
-1
0
1
2
3
4
5
-1.00
-0.75
-0.50
-0.25
0.00
0.25
0.50
0.75
1.00
020 40 60 80 100 120 140 160 180 200
Output Voltage (V)
Input Voltage (V)
Time (ns)
Output
Input
V
IN
= 1.5V
pp
G = 5
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 17/22 Rev 1D
Where TAmbient is the temperature of the working environment.
In order to determine PD, the power dissipated in the load
needs to be subtracted from the total power delivered by
the supplies.
PD = Psupply - Pload
Supply power is calculated by the standard power equation.
Psupply = Vsupply × IRMS supply
Vsupply = VS+ - VS-
Power delivered to a purely resistive load is:
Pload = ((VLOAD)RMS2)/Rloadeff
The effective load resistor (Rloadeff) will need to include
the effect of the feedback network. For instance,
Rloadeff in gure 3 would be calculated as:
RL || (Rf + Rg)
These measurements are basic and are relatively easy to
perform with standard lab equipment. For design purposes
however, prior knowledge of actual signal levels and load
impedance is needed to determine the dissipated power.
Here, PD can be found from
PD = PQuiescent + PDynamic - PLoad
Quiescent power can be derived from the specied IS
values along with known supply voltage, VSupply. Load
power can be calculated as above with the desired signal
amplitudes using:
(VLOAD)RMS = VPEAK / √2
( ILOAD)RMS = ( VLOAD)RMS / Rloadeff
The dynamic power is focused primarily within the output
stage driving the load. This value can be calculated as:
PDYNAMIC = (VS+ - VLOAD)RMS × ( ILOAD)RMS
Assuming the load is referenced in the middle of the power
rails or Vsupply/2.
Figure 8 shows the maximum safe power dissipation in the
package vs. the ambient temperature for the 8 and 14 lead
SOIC packages.
0
0.5
1
1.5
2
2.5
-40 -20 020 40 60 80
Maximum Power Dissipation (W)
Ambient Temperature (°C)
SOIC-14
SOT23-6
SOIC-16
Figure 8. Maximum Power Derating
Better thermal ratings can be achieved by maximizing
PC board metallization at the package pins. However, be
careful of stray capacitance on the input pins.
In addition, increased airow across the package can also
help to reduce the effective ӨJA of the package.
In the event the outputs are momentarily shorted to a low
impedance path, internal circuitry and output metallization
are set to limit and handle up to 65mA of output current.
However, extended duration under these conditions may
not guarantee that the maximum junction temperature
(+150°C) is not exceeded.
Layout Considerations
General layout and supply bypassing play major roles in
high frequency performance. Exar has evaluation boards
to use as a guide for high frequency layout and as aid in
device testing and characterization. Follow the steps below
as a basis for high frequency layout:
▪Include 6.8µF and 0.1µF ceramic capacitors for power
supply decoupling
▪Place the 6.8µF capacitor within 0.75 inches of the power pin
▪Place the 0.1µF capacitor within 0.1 inches of the power pin
▪Remove the ground plane under and around the part,
especially near the input and output pins to reduce
parasitic capacitance
▪Minimize all trace lengths to reduce series inductances
Refer to the evaluation board layouts below for more
information.
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 18/22 Rev 1D
Evaluation Board Information
The following evaluation boards are available to aid in the
testing and layout of these devices:
Evaluation Board # Products
CEB002 CLC1603
CEB018 CLC3613
CEB013 CLC3603
Evaluation Board Schematics
Evaluation board schematics and layouts are shown in
Figures 9-14. These evaluation boards are built for dual-
supply operation. Follow these steps to use the board in a
single-supply application:
1. Short -Vs to ground.
2. Use C3 and C4, if the -VS pin of the amplier is not
directly connected to the ground plane.
Figure 9. CEB002 Schematic
Figure 10. CEB002 Top View
Figure 11. CEB002 Bottom View
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 19/22 Rev 1D
Figure 12. CEB018 Schematic
Figure 13. CEB018 Top View
Figure 14. CEB018 Bottom View
Figure 16. CEB013 Schematic
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 20/22 Rev 1D
Figure 17. CEB013 Top View
Figure 18. CEB013 Bottom View
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
©2007-2013 Exar Corporation 21/22 Rev 1D
Mechanical Dimensions
SOT23-6 Package
SOIC-14
Data Sheet
Comlinear CLC1603, CLC3603, CLC3613 Single and Triple, 1.1mA, 200MHz Ampliers Rev 1D
For Further Assistance:
Exar Corporation Headquarters and Sales Ofces
48720 Kato Road Tel.: +1 (510) 668-7000
Fremont, CA 94538 - USA Fax: +1 (510) 668-7001
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any
circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration
purposes and may vary depending upon a user’s specic application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or
to signicantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage
has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
©2007-2013 Exar Corporation 22/22 Rev 1D
Mechanical Dimensions
SOIC-16 Package
