Description
The TDA7512F is a high performance tuner circuit for FM car-radio. It contains mixer, IF amplifier, demodulator, quality detection, ISS filter and PLL synthesizer with IF counter on a single chip. Use of BiCMOS technology allows the implementation of several tuning functions and a minimum of external components.

FEATUREs
FM part
■ RF AGC generation by RF and IF detection
■ I/Q mixer for 1st FM IF 10.7 MHz with image rejection
■ 2 programmable IF-gain stages
■ Mixer for 2nd IF 450 kHz
■ Internal 450 kHz bandpass filter with three bandwidths controlled by ISS
■ Fully integrated FM-demodulator with noise cancellation

Additional features
■ VCO for world tuning range
■ High performance fast PLL for RDS-system
■ IF counter with search stop signal
■ Quality detector for level, deviation, adjacent channel and multipath
■ Quality detection informations as analog signals external available
■ ISS (intelligent selectivity system) for cancellation of adjacent channel and noise influences
■ Adjacent channel mute
■ Fully electronic alignment
■ All functions I2C bus controlled