TDA7540N

TDA7540N AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS) Features FM-part ■ RF AGC generation by RF and IF detection ■ I/Q mixer for 1st FM IF 10.7MHz with image rejection ■ Mixer for 2nd IF 450kHz ■ Internal 450KHz bandpass filter with bandwidth control by ISS ■ Fully integrated FM-demodulator with spike cancellation AM-part ■ Wide and narrow AGC generation ■ Mixer for 1st IF 10.7MHz, AM upconversion ■ Mixer for 2nd IF 450kHz, AM downconversion ■ Integrated AM-demodulator ■ AM IF- and audio noise blanking Stereodecoder ■ 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 ■ Internal noise blanker with several threshold controls Table 1. Device summary Order code Temp range, C TDA7540N TDA7540NTR -40 to 85°C -40 to 85°C LQFP80 Additional features ...