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TDA6621INFINEONN/a9avaiTV-Stereocoder


TDA6621 ,TV-Stereocoder TDA 6621TV-StereocoderBipolar IC
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TDA6621
TV-Stereocoder
SHIEMIENS
TV-Stereocoder TDA 6621
Bipolar IC
Features
o P-DlP-18-1
Type Ordering Code Package
TDA 6621 Q67000-A5149 P-DIP-1 8-1
The TDA 6621 is a single-chip TV-M-Stereos/tem Coder. The circuit can be
partitioned into two functional blocks:
1. Stereo Matrix
a) Mono, Dual, Stereo signal processing
2. Pilottone Generator
a) Line locked PLL for generating all necessary frequencies
b) External identification tone filter for filtering the square wave identification output
signal to sinusoidal waveform
c) AM-modulator with adjustment for modulation
d) Pilottone filter
The status control is handled via two TTL compatible control inputs.
Application
Headstations of central aerial television (CATV).
Semiconductor Group 1 11.94
SIEMENS
TDA 6621
Pin Configuration
(top view)
P-DlP-18-1
IAF1 E 18 1 GND
BiosAF E 17 , PLL
IAFZ E 16:|ITone
[Pilot E 15 , QTone
OPilof E 14 Li IFreq
OA)) E 13 , IS’rereo
QAF1 E 12 , IDuol
QAF2 E ll , +1/S
hm: l: IO , MOD
UEP06217
Semiconductor Group 2
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