AN97047 pdf datasheet

Abstract
The TDA9819 is an integrated circuit for DVB-IF processing which includes the full functionality for vision and
sound-IF signal processing with a single reference PLL-demodulator based on the TDA9815 family.
In combination with a QAM demodulator IC like the TDA8046 or TDA8047 and an A/D converter IC a complete
demodulation system for QAM modulated cable DVB signals can be implemented in a simple way . The DVB sig-
nal handling like gain controlled IF-Amp, Mixing,VCO, internal and external AGC and output level adjust can be
done with the TDA9819 so the customer can use this combination of ICs without very deep knowledge of the
QAM related parameters.
Also downconversion for the future digital terrestrial  VSB modulated TV signals  in the USA can be done with the
TDA9819 in combination with a high performance QSS concept for the actual analog standard M. Together with
a BTSC stereodecoder like the TDA9851 for the US market full stereo decoding can be done.