Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
Comlinear® CLC3800
Triple, Standard Denition Video Amplier
Exar Corporation www.exar.com
48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 - Fax. +1 510 668-7001
FEATURES
n Integrated 4th-order, 8MHz lters
n Integrated 6dB video drivers
n 8.8mA total supply current
n 0.08%/0.04˚ differential gain/phase
error
n DC coupled inputs
n AC or DC coupled outputs
n DC-coupled outputs remove the need
for AC-coupling capacitors
n Each channel can drive 2Vpp into 1, 2,
or 3 video loads (150Ω, 75Ω or 50Ω)
n 0.1% THD
n Operates from 3V to 7V supplies
n Pb-free SOIC-8 package
APPLICATIONS
n Cable or satellite set-top-box (STB)
n Portable DVD players
n DVD players
n Portable media players with video out
n Video on demand
n Personal video recorders
General Description
The CLC3800 is a triple low cost video amplier capable of driving 2Vpp into
1 (150Ω), 2 (75Ω), or 3 (50Ω) video loads. The CLC3800 features integrated
8MHz, 4th-order low pass lters designed to cleanly pass standard denition
video signals while ltering out noise and other unwanted signals , resulting
in a crisper, cleaner video signal. The 4th-order lter provides improved
image quality when compared to 2nd-order passive ltering solutions.
The CLC3800 video amplier offers a xed gain of 6dB. This integrated
gain compensates for the voltage drop inherent in properly terminated video
loads; ensuring a 1Vpp video signal is present at the load.
All three video ampliers can be driven by DC-coupled signals. Their outputs
can drive either AC- or DC-coupled loads.
The CLC3800 operates from 3V to 7V supplies and consumes 8.8mA of supply
current, making it well suited for battery powered devices.
Competitive Comparison Plots (continued on page 11)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.1 110
Normalized Gain (dB)
Frequency (MHz)
Competitor A
CLC3800
V
OUT
= 2V
pp
Competitor C
Competitor B
-80
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 2V
pp
Competitor A
CLC3800
Competitor C Competitor B
Ordering Information
Part Number Gain Package Pb-Free RoHS Compliant Operating Temperature Range Packaging Method
CLC3800ISO8X 6dB SOIC-8 Yes Yes -40°C to +125°C Reel
Moisture sensitivity level for all parts is MSL-1.
IN1 OUT1
Gain
IN2 OUT2
Gain
IN3 OUT3
Gain
8MHz, 4th Order
Low Pass Filter CLC3800 - 6dB
CLC3801 - 9dB
CLC3802 - 12dB
Functional Block Diagram
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 2/17 Rev 1D
SOIC Pin Assignments
Pin No. Pin Name Description
1 IN1 Input, channel 1
2 IN2 Input, channel 2
3 IN3 Input, channel 3
4+VSPositive supply
5GND Ground
6 OUT3 Output, channel3
7 OUT2 Output, channel 2
8 OUT1 Output, channel 1
SOIC Pin Conguration
2
3
45
6
7
8
IN3
OUT1
OUT3
GND
1
IN2
IN1
+VS
OUT2
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 3/17 Rev 1D
Electrical Characteristics at 3V
TA = 25°C, Vs = +3V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling capacitor,
VIN = 1Vpp; unless otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
Frequency Domain Response
F-1dB -1dB Bandwidth
RL=150Ω, AC-coupled 7.6 MHz
RL=75Ω, DC-coupled 7.6 MHz
F-3dB -3dB Bandwidth RL=150Ω, AC-coupled 8.5 MHz
RL=75Ω, DC-coupled 8.5 MHz
FSB Stopband Attenuation at 27MHz, RL=150Ω, AC-coupled 48 dB
at 27MHz, RL=75Ω, DC-coupled 48 dB
DG Differential Gain
NTSC (3.58MHz), AC-coupled 0.7 %
NTSC (3.58MHz), DC-coupled 0.62 %
NTSC (3.58MHz), DC-coupled, RL=75Ω 0.24 %
DP Differential Phase
NTSC (3.58MHz), AC-coupled 0.3 °
NTSC (3.58MHz), DC-coupled 0.13 °
NTSC (3.58MHz), DC-coupled, RL=75Ω 0.25 °
Time Domain Response
GD Group Delay Delta delay between 400kHz and 3.58MHz 5.6 ns
PD Propogation Delay Delay from input to output, 4.5MHz 65 ns
Distortion/Noise Response
THD Total Harmonic Distortion
VOUT = 2Vpp, 1MHz, active video range + sync 0.1 %
VOUT = 1.4Vpp, 3.58MHz, active video range 0.9 %
VOUT = 2Vpp, 1MHz, active video range +
sync, RL=75Ω, DC-coupled
0.1 %
VOUT= 1.4Vpp, 3.58MHz, active video range,
RL=75Ω, DC-coupled
0.9 %
SNR Signal to Noise Ratio NTC-7 Weighting 100kHz to 4.2MHz 77 dB
CLG Chroma / Luma Gain 400kHz to 3.58MHz (NTSC) ±1 %
400kHz to 4.43MHz (PAL) ±1 %
XTALK Crosstalk
Channel-to-channel at 1MHz 60 dB
Channel-to-channel at 1MHz, RL=75Ω, DC-coupled 58 dB
DC Performance
G Gain(1) DC, CLC3800, RL=75Ω, DC-coupled 5.7 6.0 6.3 dB
GMATCH Inter-Channel Gain Matching(1) 400kHz, RL=75Ω, DC-coupled 0.08 0.2 dB
VOS Output Offset Voltage(1) VIN=0V, no load 230 330 390 mV
IbInput Bias Current(1) VIN=0V, no load 1.4 5µA
VIN Input Voltage Range(1) 0 to 1.25 V
VOOutput Voltage, CLC3800(2)
VIN=1.1Vpp, RL=150Ω, AC-coupled 2.5 V
VIN=1.1Vpp, RL=75Ω, DC-coupled(1) 2.35 2.5 2.66 V
PSRR Power Supply Rejection Ratio DC , no load, VS = 3V to 5.5V 52 dB
ISSupply Current(1) No load, all 3 channels 8.8 15 mA
Notes:
1. 100% tested at 25°C
2. Designed to handle SD video from -40°C to +125°
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 4/17 Rev 1D
Electrical Characteristics
TA = 25°C, Vs = +5V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling capacitor,
VIN = 1Vpp; unless otherwise noted.
Symbol Parameter Conditions Min Typ Max Units
Frequency Domain Response
F-1dB -1dB Bandwidth
RL=150Ω, AC-coupled 7.7 MHz
RL=75Ω, DC-coupled 7.7 MHz
F-3dB -3dB Bandwidth RL=150Ω, AC-coupled 8.6 MHz
RL=75Ω, DC-coupled 8.6 MHz
FSB Stopband Attenuation at 27MHz, RL=150Ω, AC-coupled 48 dB
at 27MHz, RL=75Ω, DC-coupled 48 dB
DG Differential Gain
NTSC (3.58MHz), AC-coupled 0.17 %
NTSC (3.58MHz), DC-coupled 0.08 %
NTSC (3.58MHz), DC-coupled, RL=75Ω 0.03 %
DP Differential Phase
NTSC (3.58MHz), AC-coupled 0.18 °
NTSC (3.58MHz), DC-coupled 0.04 °
NTSC (3.58MHz), DC-coupled, RL=75Ω 0.04 °
Time Domain Response
GD Group Delay Delta delay between 400kHz and 3.58MHz 5.6 ns
PD Propogation Delay Delay from input to output, 4.5MHz 65 ns
Distortion/Noise Response
THD Total Harmonic Distortion
VOUT= 2Vpp, 1MHz, active video range + sync 0.1 %
VOUT= 1.4Vpp, 3.58MHz, active video range 0.5 %
VOUT= 2Vpp, 1MHz, active video range + sync,
RL=75Ω, DC-coupled
0.15 %
VOUT= 1.4Vpp, 3.58MHz, active video range,
RL=75Ω, DC-coupled
0.6 %
SNR Signal to Noise Ratio NTC-7 Weighting 100kHz to 4.2MHz 77 dB
CLG Chroma / Luma Gain 400kHz to 3.58MHz (NTSC) ±1 %
400kHz to 4.43MHz (PAL) ±1 %
XTALK Crosstalk Channel-to-channel at 1MHz -61 dB
Channel-to-channel at 1MHz, RL=75Ω, DC-coupled -58 dB
DC Performance
G Gain(1)
DC, CLC3800, RL=75Ω, DC-coupled 5.7 6.0 6.3 dB
DC, CLC3801, RL=75Ω, DC-coupled 8.6 9.0 9.4 dB
DC, CLC3802, RL=75Ω, DC-coupled TBD 12 TBD dB
GMATCH Inter-Channel Gain Matching(1) 400kHz, RL=75Ω, DC-coupled 0.08 0.2 dB
VOS Output Offset Voltage(1) VIN=0V, no load 230 330 390 mV
IbInput Bias Current(1) VIN=0V, no load 1.4 5µA
VRIN Video Range - Input(1) 0 to 1.1 0 to 1.4 V
VOOutput Voltage, CLC3800(2)
VIN=1.1Vpp, RL=150Ω, AC-coupled 2.5 V
VIN=1.1Vpp, RL=75Ω, DC-coupled(1) 2.35 2.5 2.66 V
PSRR Power Supply Rejection Ratio DC, no load 53 dB
ISSupply Current(1) Total 9.5 15 mA
Notes:
1. 100% tested at 25°C
2. Designed to handle SD video from -40° to +125°
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 5/17 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 device func-
tion. The information contained in the Electrical Characteristics tables and Typical Performance plots reect 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
Output Short Circuit Current +110, -85 mA
Reliability Information
Parameter Min Typ Max Unit
Junction Temperature 150 °C
Storage Temperature Range -65 150 °C
Lead Temperature (Soldering, 10s) 260 °C
Package Thermal Resistance
8-Lead SOIC 100 °C/W
Notes:
Package thermal resistance (qJA), JDEC standard, multi-layer test boards, still air.
ESD Protection
Product SOIC-8
Human Body Model (HBM), output ESD protection 5kV
Charged Device Model (CDM) 2kV
Recommended Operating Conditions
Parameter Min Typ Max Unit
Operating Temperature Range -40 +125 °C
Supply Voltage Range 37 V
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 6/17 Rev 1D
Typical Performance Characteristics at VS = 5V
TA = 25°C, Vs = +5V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling
capacitor, VIN = 1Vpp; unless otherwise noted.
Phase vs. Frequency Group Delay vs. Frequency
Frequency Response (VOUT = 2Vpp) Frequency Response (VOUT = 2Vpp)
Frequency Response (VOUT = 0.2Vpp) Frequency Response (VOUT = 1Vpp)
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100 1000
Frequency (MHz)
V
OUT
= 0.2V
pp
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100 1000
Frequency (MHz)
V
OUT
= 1V
pp
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100 1000
Frequency (MHz)
V
OUT
= 2V
pp
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6
6.1
0.1 110
Frequency (MHz)
V
OUT
= 2V
pp
-160
-140
-120
-100
-80
-60
-40
-20
0
20
0.1 110
Frequency (MHz)
V
OUT
= 2V
pp
10
20
30
40
50
60
70
80
90
0.1 110 100
Delay (ns)
Frequency (MHz)
V
OUT
= 2V
pp
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 7/17 Rev 1D
Typical Performance Characteristics at VS = 5V
TA = 25°C, Vs = +5V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling
capacitor, VIN = 1Vpp; unless otherwise noted.
Large Signal Pulse Response Large Signal Pulse Response
Differential Gain and Phase Harmonic Distortion vs. Output Voltage
Noise vs. Frequency (SNR) Crosstalk vs. Frequency
-100
-90
-80
-70
-60
-50
-40
-30
0.1 110
Frequency (MHz)
Ch.1 <-> Ch.2
Ch.1 <-> Ch.3
Ch.2 <-> Ch.3
V
OUT
= 2V
pp
-100
-90
-80
-70
-60
-50
-40
-30
0.25 0.5 0.75 11.25 1.5 1.75 22.25 2.5
Distortion (dBc)
Output Amplitude (V
pp
)
HD3
HD2
f= 3.58MHz
-0.5
0
0.5
1
1.5
2
2.5
3
-100 0100 200 300 400 500 600 700 800 900
Input/Output Voltage (V)
Time (ns)
Output
Input
Input Rise/Fall Time = 140ns
-0.5
0
0.5
1
1.5
2
2.5
3
-100 0100 200 300 400 500 600 700 800 900
Input/Output Voltage (V)
Time (ns)
Output
Input
Input Rise/Fall Time = 1ns
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 8/17 Rev 1D
Typical Performance Characteristics at VS = 3V
TA = 25°C, Vs = +3V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling
capacitor, VIN = 1Vpp; unless otherwise noted.
Phase vs. Frequency Group Delay vs. Frequency
Frequency Response (VOUT = 2Vpp) Frequency Response (VOUT = 2Vpp)
Frequency Response (VOUT = 0.2Vpp) Frequency Response (VOUT = 1Vpp)
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100 1000
Frequency (MHz)
V
OUT
= 0.2V
pp
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100 1000
Frequency (MHz)
V
OUT
= 1V
pp
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100 1000
Frequency (MHz)
V
OUT
= 0.2V
pp
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6
6.1
0.1 110
Frequency (MHz)
V
OUT
= 0.2V
pp
-160
-140
-120
-100
-80
-60
-40
-20
0
20
0.1 110
Frequency (MHz)
V
OUT
= 2V
pp
10
20
30
40
50
60
70
80
90
0.1 110 100
Delay (ns)
Frequency (MHz)
V
OUT
= 2V
pp
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 9/17 Rev 1D
Typical Performance Characteristics at VS = 3V
TA = 25°C, Vs = +3V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling
capacitor, VIN = 1Vpp; unless otherwise noted.
Large Signal Pulse Response Large Signal Pulse Response
Differential Gain and Phase Harmonic Distortion vs. Output Voltage
Noise vs. Frequency (SNR) Crosstalk vs. Frequency
-100
-90
-80
-70
-60
-50
-40
-30
0.1 110
Frequency (MHz)
Ch.1 <-> Ch.2
Ch.1 <-> Ch.3
Ch.2 <-> Ch.3
V
OUT
= 2V
pp
-100
-90
-80
-70
-60
-50
-40
-30
0.25 0.5 0.75 11.25 1.5 1.75 22.25 2.5
Distortion (dBc)
Output Amplitude (V
pp
)
HD2
HD3
RL = 150Ω
-0.5
0
0.5
1
1.5
2
2.5
3
-100 0100 200 300 400 500 600 700 800 900
Input/Output Voltage (V)
Time (ns)
Output
Input
Input Rise/Fall Time = 140ns
-0.5
0
0.5
1
1.5
2
2.5
3
-100 0100 200 300 400 500 600 700 800 900
Input/Output Voltage (V)
Time (ns)
Output
Input
Input Rise/Fall Time = 1ns
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 10/17 Rev 1D
Typical Performance Characteristics Driving Multiple Video Loads
TA = 25°C, Vs = +5V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling
capacitor, VIN = 1Vpp; unless otherwise noted. 1 Load = 150Ω, 2 Loads = 75Ω, 3 Loads = 50Ω, 4 Loads = 37.5Ω.
Output Voltage Swing
Differential Gain and Phase Total Harmonic Distortion
Frequency Response Pulse Response
-7
-6
-5
-4
-3
-2
-1
0
1
0.1 110
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 0.2V
pp
4 Loads
3 Loads
2 Loads
1 Load
V
OUT
= 2V
pp
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
0.0 0.5 1.0 1.5 2.0
Output (V)
Time (us)
1 Load
4 Loads
3 Loads
2 Loads
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-0.5 0.0 0.5 1.0 1.5 2.0 2.5
Output Voltage (V)
Input Voltage (V)
1 Load
2 Loads
3 Loads
4 Loads
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 11/17 Rev 1D
Typical Competitive Comparison Plots
TA = 25°C, Vs = +5V, input is DC-coupled, input source resistance = 37.5Ω, RL = 150Ω thru a 220μF AC-coupling
capacitor, VIN = 1Vpp; unless otherwise noted.
Total Harmonic Distortion DC-Coupled Out (RL = 75Ω) Signal to Noise Ratio and Differential Gain/Phase
Total Harmonic Distortion (RL = 150Ω) Total Harmonic Distortion (RL = 75Ω)
Frequency Response Frequency Response
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.1 110
Normalized Gain (dB)
Frequency (MHz)
Competitor A
CLC3800
V
OUT
= 2V
pp
Competitor C
Competitor B
-80
-70
-60
-50
-40
-30
-20
-10
0
10
0.1 110 100
Normalized Gain (dB)
Frequency (MHz)
V
OUT
= 2V
pp
Competitor A
CLC3800
Competitor C Competitor B
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
0.1 110
THD (dB)
Frequency (MHz)
V
OUT
= 2V
pp
Competitor A
CLC3800
Competitor C
Competitor B
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
0.1 110
THD (dB)
Frequency (MHz)
Competitor A
CLC3800
Competitor C
Competitor B
V
OUT
= 2V
pp
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
0.1 110
THD (dB)
Frequency (MHz)
Competitor A
CLC3800 Competitor C
Competitor B
V
OUT
= 2V
pp
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 12/17 Rev 1D
Application Information
Basic Operation
The CLC3800 is a 3-channel video ampliers that operates
with single supply voltages from 3V to 7V. They are
designed to accept DC-coupled inputs and will drive AC-
or DC-coupled outputs. Each channel integrates a DC
offset, 4th order Butterworth lters, and xed gain video
drivers. The ltering is appropriate for standard denition
video signals and has a -3dB cutoff of 8.6MHz. This cutoff
provides an excellent compromise between at in-band
response and high frequency noise reduction. The input
signals are level shifted prior to the input lters and output
ampliers.
Inputs: DC-Coupled
The inputs must be DC-coupled. Many DACs provide a
current output that is resistively terminated to ground.
These DACs are conveniently DC-coupled to the inputs of
the CLC3800 as shown in Figure 1. DC-coupled inputs use
fewer components and lowers the overall system cost.
Figure 1. Typical Input Conguration
The input termination/source resistance is set by the
application. Any value up to several kΩ can be used. Lower
values reduce noise, but if higher values are needed, there
is little effect on lter shape or distortion performance of
the CLC3800. If the CLC3800 is located on the same board
as the video source, and within a few inches, the input
termination resistance is determined by the requirements
of the Video DAC or Encoder. If a cable is needed to
connect the CLC3800 to the video source, the termination
must match the cable impedance which is 75Ω for standard
video cable.
The CLC3800 video amplier adds a DC offset, raising the
input signal by approximately 330mV. For example, when
0V is applied to the input, the output becomes approximately
330mV above ground. This offset eliminates sync tip
clipping. Figure 2 illustrates a typical DC-coupled input
signal and resulting output signal after exiting the CLC3800.
Figure 2. Typical DC-coupled Signal for CLC3800
The input voltage range is typically 0V to 1.4V for the
CLC3800 at 5V supply. Due to the internal xed gain of 6dB
(for the CLC3800) and the internal level shift of nominally
330mV, the VIN range is generally limited by the output. VIN
and VOUT are fully detailed in the Electrical Characteristics
section.
Outputs: AC- or DC-Coupled
Each channel of the CLC3800 can drive either AC- or DC-
coupled loads. Each channel can drive single or dual video
loads, 150Ω (1 video load) or 75Ω (2 video loads). Figure
3 shows the typical conguration for driving either AC- or
DC-coupled loads.
With DC-coupled loads, AC-coupling capacitors are not
used. Match the series termination resistors to the typical
cable impedance, 75Ω for standard video cable. Keep the
output connection to the series termination resistors as
short as possible. If driving 2 video loads, place both
resistors close to the CLC3800.
With AC-coupled loads, use an AC-coupling capacitor
of at least 220μF in a 75Ω environment. A value of at
least 220μF will ensure that low frequencies are passed,
preventing video droop across the line, referred to as “tilt”.
0.00V
0.02V
Input Signal
0.32V
1.02V
0.35V
Output Signal
0.97V
2.39V
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
OUT2
GND
Video
DAC/
Encoder
R or Y
B or PR
G or PB
DAC Load Resistors
per Video DAC/Encoder specs
+3V or +5V
0.1µF1.0µF
8
7
6
5
1
2
3
4
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 13/17 Rev 1D
Figure 3. Typical Output Conguration
Power Supply Decoupling
For optimum performance, power supply decoupling
is required. Figure 4 shows the recommended usage
of power supply decoupling capacitors. The 0.1µF
decoupling capacitor must be placed as close to pin 4 as
possible, < 0.1” or < 2.5mm, to be effective. The larger,
1µF capacitor can be placed further away.
Figure 4. Recommended Power Supply Decoupling
0
0.5
1
1.5
2
2.5
-40 -20 020 40 60 80
Maximum Power Dissipation (W)
Ambient Temperature (°C)
SOIC-8
Figure 5. Maximum Power Derating
Power Dissipation Considerations with DC-Coupled Loads
When driving DC loads, the supply current is much higher
than in AC applications and care must be taken to dissipate
the extra heat generated. The output signal will swing
from about 0.3V to 2.3V for full swing video. In the worst
case condition, an all white screen with dual DC loads,
the additional thermal rise over the quiescent condition is
about 20°C. An easy way to help distribute this extra heat
is to place a ground plane under the part and add ground
plane on the bottom of the board immediately under the
part with vias between the two planes.
The CLC3800 is designed primarily for low voltage
operation with supply values between 3.0V and 5.5V, but
larger supplies can be used. In this situation, DC loads
may not be possible due to thermal considerations. With
single DC loads on all three channels and a 12V supply,
the thermal rise is an additional 45° this gives a total
temperature rise of about 57°.
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 1µF and 0.1µF ceramic capacitors for power
supply decoupling
• Place the 6.8µF capacitor <0.75 inches of the power pin
• Place the 0.1µF capacitor <0.1 inches of the power pin
• Remove the ground plane near the input and output
pins to reduce parasitic capacitance
• Minimize all trace lengths to reduce series inductances
Refer to the evaluation board layouts for more information.
Evaluation Board Information
The following evaluation boards are available to aid in the
testing and layout of these devices:
Evaluation Board Products
CEB021 CLC3800 in SOIC packages
220µF
220µF
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
OUT2
GND
75Ω
75Ω
75Ω
75Ω
220µF
75Ω
75Ω Video Cables
AC-Coupling Caps
are Optional
8
7
6
5
1
2
3
4
75Ω
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
OUT2
GND
+3V or +5V
0.1µF1.0µF
8
7
6
5
1
2
3
4
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 14/17 Rev 1D
Evaluation Board Schematics
Evaluation board schematics and layouts are shown in
Figures 9-11. Application Note AN-6 provides a detailed
description of the evaluation board.
SHORT FOR CLC3800/CLC3801/CLC3802
Figure 9. CEB021 Schematic
Figure 10. CEB021 Top View
Figure 11. CEB006 Bottom View
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 15/17 Rev 1D
Typical Application Circuits
220µF
220µF
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
OUT2
GND
75Ω
75Ω
75Ω
75Ω
220µF
75Ω
75Ω Video Cables
Video
DAC/
Encoder
R or Y
B or PR
G or PB
DAC Load Resistors
per Video DAC/Encoder specs
AC-Coupling Caps
are Optional
DVD Player or STB
R
G
B
+3V or +5V
0.1µF1.0µF
8
7
6
5
1
2
3
4
75Ω
Figure 11. Typical Conguration for Component Video (RGB, YPBPR, or YUV)
220µF
220µF
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
OUT2
GND
75Ω
75Ω
75Ω
75Ω
220µF
75Ω
75Ω Video Cables
Video
DAC/
Encoder
Y
CV
C
DAC Load Resistors
per Video DAC/Encoder specs
AC-Coupling Caps
are Optional
DVD Player or STB
Y
C
CV1
+3V or +5V
0.1µF1.0µF
8
7
6
5
1
2
3
4
75Ω
220µF
75Ω
75Ω CV2
Figure 11. Typical Conguration for Composite Video an extra composite output is available to drive an RF modulator
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
©2008-2013 Exar Corporation 16/17 Rev 1D
220µF
220µF
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
OUT2
GND
75Ω
75Ω
75Ω
220µF
75Ω
75Ω
Video
DAC/
Encoder
Y
CVBS
C
DAC Load Resistors
per Video DAC/Encoder specs
AC-Coupling Caps
are Optional
DVD Player or STB
CVBS1
+3V or +5V
0.1µF1.0µF
8
7
6
5
1
2
3
4
Video Cables75Ω
Video Cables75Ω
75Ω
220µF
75Ω
75Ω CVBS2
S-Video
Figure 11. Typical Conguration for Composite (CVBS) and S-Video
75Ω
220µF
220µF
220µF
CLC3800
CLC3800
IN1 OUT1
IN2
IN3 OUT3
+Vs
IN1 OUT1
OUT3
IN2
IN3
OUT2
GND
OUT2
+3V or +5V
+Vs GND
75Ω
75Ω
75Ω
75Ω
75Ω
220µF
75Ω
75Ω Video Cables
220µF
75Ω
75Ω Video Cables
220µF
75Ω
75Ω
Video
DAC/
Encoder
R or Y
B or PR
YOUT
CV OUT
G or PB
COUT
DAC Load Resistors
per Video DAC/Encoder specs
AC-Coupling Caps
are Optional
DVD Player or STB
R
G
B
Y
C
CV
0.1µF1.0µF
+3V or +5V
0.1µF1.0µF
8
7
6
5
8
7
6
1
2
3
4
1
2
3
54
75Ω
75Ω
Figure 11. Typical Conguration for 6-channel application
Data Sheet
Comlinear CLC3800 Triple, Standard Denition Video Amplier Rev 1D
For Further Assistance:
Exar Corporation Headquarters and Sales Ofces
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 specic 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 signicantly 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.
©2008-2013 Exar Corporation 17/17 Rev 1D
Mechanical Dimensions
SOIC-8 Package
Mouser Electronics
Authorized Distributor
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CLC3800ISO8EVB CEB021_C CEB021_B