FMS6141_06 Datasheet, PDF (6/11 Pages) Fairchild Semiconductor – Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver

I/O Configurations
Figure 6 shows a typical AC-coupled input configuration
for driving the filter/driver. Using this configuration, a
0.1µF ceramic capacitor is used to AC couple the input
signal. The coupling capacitor and the input termination
resistor at the input of the filter/driver should be placed
close to the input pin for optimal signal integrity.
0.1µF
Input
R _TERM
Clamp /
Bias
LPF
Buf
Termination &
coupling close
to device input
Figure 6. Typical Input Configuration
0.65V
YIN
YOUT
Driver
75Ω
75Ω Video Cables
75Ω
75Ω
75Ω
800 K ohms
Figure 7. Conceptual Illustration — Input Clamp Circuit and Output Driver
Connected to Drive Single or Dual Video Loads
LOAD2
(optional)
LOAD1
DVD
SoC
0V - 1.4V
75
LCVF
Clamp Mode
R_TERM
Figure 8. DC-Coupled Input and DC-Coupled Output
© 2006 Fairchild Semiconductor Corporation
FMS6141 Rev. 1.0.1
6
www.fairchildsemi.com