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TDA7540B Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7540B Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 75 page  May 2006 Rev 1 1/75 75 TDA7540B 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 Additional Features ■ VCO for world tuning range ■ High performance fast PLL for RDS-System ■ 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 ■ All functions I2C-Bus controlled Description The TDA7540 is a high performance tuner circuit for AM/FM car radio. It contains mixer, IF amplifier, demodulator for AM and FM, stereodecoder, 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. Order codes TQFP80 Part number Temp range, °CPackage Packing TDA7540B -40 to 85 TQFP80 Tube www.st.com |
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