TDA7541B
Overview
The TDA7541B is a high performance tuner circuit with stereo decoder for AM/FM car radio. It contains a mixer, IF amplifier, demodulator for AM and FM, stereo decoder, quality detection, ISS filter and PLL synthesizer with IF counter on a single chip.
- FM part - AGC generation by RF and IF detection - I/Q mixer for 1st IF 10.7 MHz with image rejection - Mixer for 2nd IF 450 kHz - Internal 450 kHz band pass filter with bandwidth control by ISS - Fully integrated FM demodulator with noise cancellation AM part - Wide and narrow AGC generation - Mixer for 1st IF 10.7 MHz, AM up conversion - Mixer for 2nd IF 450 kHz - Integrated AM-demodulator - AM IF noise blanking Stereo decoder - PLL with adjustment free, fully integrated VCO - Automatic pilot dependent MONO/STEREO switching - Programmable ROLL-OFF compensation - High cut and stereo blend-characteristics programmable - Dedicated RDS mute - Audio noise blanker Additional features - VCO for world tuning range Device summary Order code TDA7541B TDA7541BTR TDA7541BW TDA7541BWTR Package LQFP64 *
- - High performance fast PLL for RDSSystem - IF counter for FM and AM with search stop signal - Quality detector for level, deviation, adjacent channel and multipath - ISS (Intelligent selectivity system) for cancellation of adjacent channel and noise influences - Adjacent channel mute - Fully electronic alignment - Independent weather band input - All functions I2C bus controlled
