STMicroelectronics TDA8222
The TDA8222 is a video and sound IF circuit in Shrink DIP24 package for color and black and white TV sets. It is intended to operate with a negatively modulated vision carrier and frequency modulated sound carrier. It incorporates video and audio switches compatible with SCART european norm.| Part No. | TDA8222 |
|---|---|
| Datasheet | TDA8222 Download |
| Manufacturer |  STMicroelectronics |
| Description | VIDEO & SOUND IF SYSTEM WITH VIDEO AND SOUND SWITCHES |
| Buy | Stock & Price |
DESCRIPTION
PIN CONNECTIONS TUNER AGC STARTING POINT ADJUSTMENT TUNER AGC OUTPUT V CC VIDEO SWITCH V CC BALANCED IF INPUT BALANCED IF INPUT GROUND AUDIO SWITCH OUTPUT VOLUME CONTROL FM REFERENCE TUNED CIRCUIT DEMODULATED AUDIO OUTPUT VIDEO SWITCH OUTPUT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 AGC TIME CONSTANT IF LC IF LC SWITCHING INPUT AFC LC AFC OUTPUT DEMODULATED CVBS OUTPUT EXTERNAL AUDIO INPUT 2nd IF SOUND INPUT 2nd IF DECOUPLING INPUT + MUTE INTERNAL VIDEO INPUT EXTERNAL VIDEO INPUT 8222-01.EPS October 1993 1/9 TDA8222 BLOCK DIAGRAM 3 1 24 23 22 20 2 Tuner AGC AGC Reference Amplifier AFC 19 5 IF Amplifier Video Amplifier 6 Band Gap Voltage Reference White and Black Noise Inverter 18 4 9 14 8 17 6dB 11 FM Discri Limiter LP Filter Mute D.C. Volume Control 6dB 12 13 8222-02.EPS TDA8222 10 16 15 21 7 FUNCTIONALDESCRIPTION
General The IC consists of the following parts (see block diagram): - Three stages gain controlled wide band amplifier - Quasi-synchronous...
