TDA9812 Description
plastic shrink dual in-line package; 32 leads (400 mil) plastic small outline package; 28 leads body width 7.5 mm GENERAL DESCRIPTION TDA9812 The TDA9812/T is an integrated circuit for multistandard vision IF signal processing and AM and FM sound demodulation in TV and VTR sets.
TDA9812 Key Features
- 5 V positive supply voltage
- Gain controlled wide band VIF-amplifier (AC-coupled)
- True synchronous demodulation with active carrier regeneration (very linear demodulation, good intermodulation figures,
- Gated phase detector for L/L accent standard
- VCO frequency switchable between L and L accent (alignment external) picture carrier frequency
- Separate video amplifier for sound trap buffering with high video bandwidth
- VIF AGC detector for gain control, operating as peak sync detector for B/G (optional external AGC) and peak white detect
- Tuner AGC with adjustable Take Over Point (TOP)
- AFC detector without extra reference circuit
- AC-coupled limiter amplifier for sound intercarrier signal