Datasheet

+
ODD/EVEN
FIELD OUTPUT
C
3
0.1 PF
R
S
14
13
R
S
BURST/BACK PORCH
TIMING OUTPUT
12
R
S
COMPOSITE
SYNC OUTPUT
11
V
CC
10
9
8
R
S
R
S
VIDEO FORMAT
OUTPUT
VERTICAL SYNC
OUTPUT
VSOUT
VFOUT
GND
V
CC3
BPOUT
OEOUT
CSOUT
R
EXT
GND
V
CC1
V
IN
GND
V
CC2
HSOUT
R
S
HORIZONTAL
SYNC OUTPUT
V
CC
C
2
0.1 PF
7
6
5
4
3
2
1
R
EXT
10 k:, 1%
C
4
4.7 PF
C
1
0.1 PF
C
IN
1 PF
CVBS/Y/G
VIDEO INPUT
R
T
75:
V
CC
LMH1981
LMH1981
SNLS214H –APRIL 2006–REVISED MARCH 2013 www.ti.com
LMH1981 Test Circuit
Figure 2. Test Circuit
The LMH1981 test circuit is shown in Figure 2. The video generator should provide a low-noise, broadcast-
quality signal over 75Ω coaxial cable which should be impedance-matched with a 75Ω load termination resistor
to prevent unwanted signal distortion. The output waveforms should be monitored using a low-capacitance probe
on an oscilloscope with at least 500 MHz bandwidth. See PCB LAYOUT CONSIDERATIONS for more
information about signal and supply trace routing and component placement.
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