TDA7703TR STMicroelectronics

TDA7703 Highly integrated tuner for AM/FM car radio Target specification Features Fully integrated VCO for world tuning AM/FM mixers with high image rejection Integrated AM-LNA and AM-PINDIODE Automatic self alignment for image rejection Digital IF signal processing, high performance LQFP44 and drift-free Integrated IF-filters with high selectivity, high dynamic range and FM adaptive bandwidth It contains mixers and IF amplifiers for AM and control FM, fully integrated VCO and PLL synthesizer, High performance stereodecoder with IF-processing including adaptive bandwidth noiseblanker control (FM), stereo decoder on a single chip. 2 I C bus controlled The utilization of digital signal processing results Single 5 V supply in numerous advantages against today s tuners: Very low number of external components LQFP44 package Very small space occupation and easy application Description Very high selectivity due to digital filters The TDA7703 highly integrated tuner (HIT44) is High flexibility by software control part of a family of tuners for carradio applications. Automatic image rejection alignment. Table 1. Device summary Order code Package Packing TDA7703 LQFP44 (10x10x1.4mm) Tray TDA7703TR LQFP44 (10x10x1.4mm) Tape and reel April 2009 Rev 1 1/32 This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice. www.st.com 1 Contents TDA7703 Contents 1 Block diagram and pin description . 6 1.1 Block diagram . 6 1.2 Pin description 7 2 Function description . 9 2.1 FM - mixer . 9 2.2 FM - AGC 9 2.3 AM - LNA 9 2.4 AM - AGC 9 2.5 AM - mixer . 9 2.6 IF A/D converters 9 2.7 Audio D/A converters 10 2.8 VCO . 10 2.9 PLL 10 2.10 Crystal oscillator 10 2.11 DSP . 10 2.12 IO interface pins 11 2.13 Serial interface . 11 3 Electrical specifications . 13 3.1 Absolute maximum ratings 13 3.2 Thermal data 13 3.3 General key parameters 13 3.4 Electrical characteristics 14 3.4.1 FM - section 14 3.4.2 AM - section 15 3.4.3 VCO 15 3.4.4 Phase locked loop . 16 3.4.5 Audio DAC . 16 3.4.6 IO interface pins . 16 2 3.4.7 I C interface 17 3.5 Overall system performance 18 2/32 Rev 1