TDA7705 STMicroelectronics

TDA7705 Highly integrated tuner for AM/FM car radio Features Fully integrated VCO for world tuning High performance PLL for fast RDS system AM/FM mixers with high image rejection Integrated AM-LNA and AM-PINDIODE Automatic self alignment for preselection and image rejection Digital IF signal processing, high performance LQFP64 and drift-free Integrated IF-filters with high selectivity, high dynamic range and adaptive bandwidth control RDS demodulation with group and block synchronization It contains mixers and IF amplifiers for AM and High performance stereodecoder with FM, fully integrated VCO and PLL synthesizer, noiseblanker IF-processing including adaptive bandwidth 2 I C/SPI bus controlled control, stereo decoder and RDS decoder on a single chip. Single 5 V supply The utilization of digital signal processing results LQFP64 package in numerous advantages against today s tuners: very low number of external components, very Description small space occupation and easy application, very high selectivity due to digital filters, high The TDA7705 highly integrated tuner (HIT) is a flexibility by software control and automatic new generation of high performance tuners for alignment. carradio applications. Table 1. Device summary Order code Package Packing TDA7705 LQFP64 (10x10x1.4mm) Tray TDA7705TR LQFP64 (10x10x1.4mm) Tape and reel September 2013 Doc ID 15938 Rev 9 1/42 www.st.com 1Contents TDA7705 Contents 1 Block diagram and pins description 6 1.1 Block diagram . 6 1.2 Pin description 7 2 Function description 10 2.1 FM - mixers . 10 2.2 FM - AGC . 10 2.3 AM - LNA . 10 2.4 AM - AGC . 10 2.5 AM - mixers . 10 2.6 IF A/D converters . 11 2.7 Audio D/A converters 11 2.8 VCO . 11 2.9 PLL 11 2.10 Crystal oscillator 11 2.11 DSP . 11 2.12 IO interface pins 12 2.13 Serial interface . 12 2.13.1 Serial interface choice / boot mode 12 2 2.13.2 I C bus protocol . 13 2.13.3 SPI bus protocol 14 3 Electrical specifications . 16 3.1 Absolute maximum ratings 16 3.2 Thermal data 16 3.3 General key parameters 16 3.4 Electrical characteristics 17 3.4.1 FM - section 17 3.4.2 AM - section 18 3.4.3 VCO 19 3.4.4 Phase locked loop . 19 3.4.5 Tuning DAC 19 2/42 Doc ID 15938 Rev 9