TA1274F
FEATURES
- patible pin assignment to TA1267AF
PIF CIRCUIT
- True synchronous PIF demodulator
- 3-stages gain controlled PIF amplifier
- High speed response PIF AGC detector
- Buzz reducer
- Equalizer for video output
- AFT detector without extra reference circuit
SIF CIRCUIT
- Wide range gain controlled SIF amplifier (control range : 70d B typ.)
- Alignment-free PLL-FM demodulator
Weight: 0.27 g (typ.)
1 2002-12-20
BLOCK DIAGRAM
2 2002-12-20
TERMINAL FUNCTION
PIN No.
NAME
FUNCTION
1 24
PIF input
Differential type inputs. Typical input level is 85 d BµV.
INTERFACE CIRCUIT
2 RF AGC output
Open collector (PNP) type output. Maximum output current is 0.5 m A.
3 AGC filter
Connect a capacitor (0.47 µF) between GND.
4 EQ amplifier output 5 EQ filter
No.4 terminal is EQ amplifier output. Maximum output current of this terminal is 5 m A. No.5 terminal is for EQ filter.
6 N.C.
7 Bias filter
Connect a capacitor (10 µF) between GND.
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3 2002-12-20
PIN...
