TEF6730A

TEF6730A Front-end for digital-IF car radio Rev. 01 — 21 February 2007 Product data sheet 1. General description The TEF6730A is a car radio tuner front-end for digital-IF reception, especially designed for co-operation with digital-IF DSP back-ends of the SAF773x and SAF778x families. The FM tuner features single conversion to IF = 10.7 MHz and integrated image rejection; capable for FM 65 MHz to 108 MHz and weather band reception. The AM tuner features single conversion to IF = 10.7 MHz with an integrated AM front-end, capable for LW, MW and full SW reception. A combined AM/FM IF AGC amplifier provides a suitable IF signal to the ADC in IF DSP. The device can be controlled via the fast-mode I2C-bus (400 kHz) and includes autonomous tuning functions for easy control. No manual alignments are required. 2. Features I FM mixer for conversion of FM RF to IF 10.7 MHz with large dynamic range, high image rejection and selectable mixer gain I Selectable high or low injection of LO I AGC PIN diode drive circuit for FM RF AGC with detection at RF and IF, including keyed AGC function I RF input for weather band applications I Integrated AM front-end LNA I Integrated AM RF AGC for low desensitization and AGC PIN diode drive circuit with detection at RF and IF I AM mixer for conversion of AM RF to IF 10.7 MHz I AM/FM IF AGC amplifier with large dynamic range, gain controlled from IF DSP I AM and FM front-end AGC information is available via the I2C-bus I Low phase noise local oscillator...