TDA8222

TDA8222 VIDEO & SOUND IF SYSTEM WITH VIDEO AND SOUND SWITCHES . . . . . . . . . . 3 STAGE IF GAIN CONTROLLED AMPLIFIER SYNCHRONOUS VIDEO DEMODULATOR TOP SYNC AGC CIRCUIT WHITE AND BLACK NOISE INVERTER TUNER AGC OUTPUT FOR PNP TUNERS (suitable also for MOSFET tuners) ANALOG AFC FM DETECTOR AUDIO AND VIDEO SWITCHES COMPATIBLE WITH SCART EUROPEAN NORM DC VOLUME CONTROL MUTE FUNCTION SHRINK DIP24 (Plastic Package) ORDER CODE : TDA8222 DESCRIPTION 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. 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 L...