TDA8120B

www.DataSheet4U.com TDA8120B MULTISTANDARD VIDEO AND SOUND IF SYSTEM . . . . . . . . . . . . . . GAIN CONTROLLED IF AMPLIFIER VIF OPERATING FREQUENCY UP TO 50MHz SYNCHRONOUS DETECTOR WHITE SPOT INVERTER VERY LOW DIFFERENTIAL ERROR VERY LOW PHASE ERROR INTERNAL AGC SWITCH (B/G - L) AGC TOP. SYNCH. FOR STANDARD B/G AGC TOP WHITE FOR STANDARD L QUASI SPLIT SOUND FOR STANDARD B/G SOUND DETECTOR FOR STANDARD L VIDEO MUTING FACILITY SEPARATED SOUND OUTPUT OPERATES WITHOUT EXTERNAL GATING PULSE The Sound IF section acts as a Quasi Split Sound (QSS) subsystem in B/G transmission and allows a second Sound IF with high rejection of the video information. The DC switch can modify the Sound IF configuration to process AM modulated Sound signals (L). The TDA8120B is assembled in a 24 pin dual in line power package. DESCRIPTION The TDA8120B is a monolithic IC for TV video IF and Sound IF amplification and demodulation that can operate with all the TV standards. The Video IF section can handle negative (B/G) or positive (L) modulated video signals by means of DC switching. PIN CONNECTIONS AF AM OUT CARRIER TUNING 3 SUPPLY VOLTAGE VS1 2nd IF SOUND OUT (QSS) GND 7 VIDEO OUTPUT SUPPLY VOLTAGE VS2 AGC TIME CONSTANT T 2V CARRIER TUNING 12 13 8 9 10 11 18 17 4 5 6 22 21 1 2 24 23 DIP24 (Plastic Package) ORDER CODE : TDA8120B AGC TIME CONSTANT T 2S AGC TIME CONSTANT T 1S STANDARD SWITCH QSS OR AM INPUT 20 19 GND VIDEO IF INPUT 16 15 14 AGC TIME CONSTANT T 1V AND VIDEO MUTING 8120B-01.EPS ...