TEF6904A Datasheet | NXP Semiconductors

.. Integrated car radio Rev. 01 - 3 February 2006 Preliminary data sheet 1. General description The TEF6904A is a single chip car radio integrated circuit with FM/AM tuner, stereo decoder, weak signal processing and audio processing. FM tuner with double conversion to IF1 = 10.7 MHz and IF2 = 450 k Hz with integrated image rejection for both IF1 and IF2; integrated channel filter with variable bandwidth control; capable of US FM, Europe FM, Japan FM and Eastern Europe FM. AM tuner with double conversion to IF1 = 10.7 MHz and IF2 = 450 k Hz; capable of Long Wave (LW), Medium Wave (MW) and full range Short Wave (SW) (11 m to 120 m bands). Multiplex (MPX) stereo decoder, ignition noise blanker and extensive weak signal processing. Audio processing with flexible source selection, volume, balance, fader, input gain control and inaudible tuning mute. The application of an external processor is possible. Integrated audio filters for bass and treble and loudness control function. The device can be controlled via the fast-mode I2C-bus (400 k Hz) and includes autonomous tuning functions for easy control without microcontroller timing. No manual alignments are required. 2. Features s s s s s s s s s s s s s s s s FM Radio Frequency (RF) front-end with large dynamic range Integrated FM channel filter with controlled bandwidth Fully integrated FM demodulator Fully integrated stereo decoder with high immunity for birdy noise FM noise blanker with adaptive detection at MPX and level Signal quality detection: level, AM wideband, frequency deviation, ultrasonic noise/adjacent channel FM weak signal processing: stereo blend, high cut control and soft mute AM RF Automatic Gain Control (AGC) control circuit for external cascode AGC and PIN diode AGC Dual AM noise blanking system AM weak signal processing: high cut control and soft mute Low phase noise local oscillator In-lock detection for optimized adaptive Phase-Locked Loop (PLL) tuning speed Crystal...