TERMINAL FUNCTION
PIN
No.
PIN NAME
FUNCTION
1 PIF AGC1
2 PIF AGC2
This IC is adopted dual time constant
AGC circuit to improve AGC
responsibility.
To mute picture, connect 1.6 kΩ
between pin 1 and GND.
3
RF AGC Output
RF AGC output terminal
(open-collector output)
4 RF AGC Delay
Changing comparator reference
voltage adjusts RF AGC delay point.
5 PIF VCC
Connect bypass capacitor between
this terminal and PIF GND with
shortest wiring.
6 PIF Input 1
7 PIF Input 2
PIF input terminal.
Input impedance 5 kΩ (Typ.)
8 PIF GND
Connect bypass capacitor between
this terminal and PIF VCC with
shortest wiring.
TA1272AF
INTERFACE
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2001-02-28 3/17