TDA6142-5X Datasheet, PDF (3/10 Pages) Siemens Semiconductor Group – FM-Demodulator for SAT TV with Switchable Input

TDA 6142-5X
Pin Definitions and Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Function
Connection for parallel resonance circuit
Connection for parallel resonance circuit
AGC-control voltage output
AGC-threshold adjust
Demodulator tank circuit
Demodulator tank circuit
Ground
AFC-preamplifier output
AFC-low pass filter and feedback point for AFC-sensitivity setting
AFC-output to A/D-converter and AFC-low pass filter
Video output
Video polarity switch input, positive/negative modulation
IF-reference input 1
IF-input 1, e.g. ∆f = 27 MHz
Reference voltage output
IF-input select for IF-input 1 or 2
IF-reference input 2
IF-input 2, e.g. ∆f = 18 MHz
Supply voltage 5 V
AGC-low pass filter
Semiconductor Group
3