TDA9819 Overview
plastic shrink dual in-line package; 32 leads (400 mil) plastic small outline package; body width 7.5 mm DVB functions Gain controlled IF-amplifier Mixer for DVB-IF VCO for QAM carrier recovery External VCO control for DVB Internal and external AGC for DVB TDA9819 DVB output level adjust via AGC adjust High level DVB operational output amplifier.
TDA9819 Key Features
- 5 V supply voltage
- Applicable for IF frequencies of 38.9 MHz and 45.75 MHz
- Two switched VIF inputs, gain controlled wide band VIF-amplifier (AC-coupled)
- True synchronous demodulation with active carrier regeneration (very linear demodulation, good intermodulation figures,
- VCO frequency switchable between TV (M or BG/L) IF-picture carrier and Digital Video Broadcast (DVB) frequency
- Separate video amplifier for sound trap buffering with high video bandwidth
- VIF AGC detector for gain control, operating as peak sync detector for M and B/G and peak white detector for L; controll
- Tuner AGC with adjustable takeover point (TOP)
- AFC detector without extra reference circuit
- SIF input for single reference QSS mode (PLL controlled); SIF AGC detector for gain controlled SIF amplifier; single ref