GENERAL DESCRIPTION
This document specifies a DVB compliant demodulator and forward error correction decoder IC for reception of QPSK or BPSK modulated signals for satellite applications. The Satellite Demodulator and Decoder (SSD) can handle variable symbol rates without adapting the analog filters within the tuner. Typical applications for this device are:

• MCPC (Multi-Channel Per Carrier): one QPSK or BPSK modulated signal in a single satellite channel (transponder)
• Simul-cast: QPSK or BPSK modulated signal together with a Frequency Modulated (FM) signal in a single satellite channel (transponder).

The TDA8083 can handle variable symbol rates in the range of 12 to 30 Msymbols/s with a minimum number of low cost and non-critical external components.

The TDA8083 has minimal interfaces with the tuner. It only requires the demodulated analog I and Q baseband input signals and provides a tuner AGC control signal. Analog-to-digital conversion is done internally by two matched 7-bit ADCs.

APPLICATIONS
• Digital satellite TV: demodulation and FEC.