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TDA7541 Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7541 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 76 page  January 2008 Rev 3 1/76 1 TDA7541 AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system Features ■ FM part – AGC generation by RF and IF detection – I/Q mixer for 1st IF 10.7MHz with image rejection –Mixer for 2nd IF 450kHz – Internal 450kHz 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 10.7MHz, AM upconversion –Mixer for 2nd IF 450kHz – 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 – 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 – Independend weather band input – All functions I2C bus controlled Description The TDA7541 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. Use of BICMOS technology allows the implementation of several tuning functions and a minimum of external components. LQFP64 Table 1. Device summary Order code Package Packing TDA7541 LQFP64 (10 x 10 x 1.4mm) Tray TDA7541TR LQFP64 (10 x 10 x 1.4mm) Tape and reel TDA7541W LQFP64 (14 x 14 x 1.4mm) Tray TDA7541WTR LQFP64 (14 x 14 x 1.4mm) Tape and reel www.st.com |
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