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TDA8120B

ST Microelectronics
Part Number TDA8120B
Manufacturer ST Microelectronics
Description Multistandard Video And Sound if System
Published Nov 15, 2007
Detailed Description www.DataSheet4U.com TDA8120B MULTISTANDARD VIDEO AND SOUND IF SYSTEM . . . . . . . . . . . . . . GAIN CONTROLLED IF A...
Datasheet PDF File TDA8120B PDF File

TDA8120B
TDA8120B

Overview
www.
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com TDA8120B MULTISTANDARD VIDEO AND SOUND IF SYSTEM .
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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 TUNER AGC OUTPUT TUNER AGC DELAY October 1993 1/6 www.
DataSheet4U.
com TDA8120B BLOCK DIAGRAM 11 12 SSW 22 18 16 17 VIF AMP (3 STAGES) STANDARD SWITCH (B/G or L) SSW LIMITER PHASE SHIFTER (0° or 180°) VOLTAGE REGULATION 4 9 VIDEO DEMOD.
AND BUFFER WHITE SPOT INV.
NOISE INVERT VIDEO PREAMP.
8 VIDEO SECTION 14 13 10 19 20 21 1st SIF AMP.
(3 STAGES) BUFFER AGC AMPLIF.
AND AGC DELAY TOP SYNC CLAMP or TOP WHITE CLAMP MIN.
VIDEO DETECTOR SSW 7 15 LIMITER AND PHASE SHIFTER (90°) 2nd SIF DEMO...


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