TDA7340

AUDIOPROCESSOR:
*MUTE, SOFT MUTE AND ZERO CROSSING MUTE
*ONE DIFFERENTIAL, TWO STEREO AND
   TWO MONO INPUTS
*DIFFERENTIAL PHONE INPUT
*VOLUME, BASS, TREBLE AND LOUDNESS
CONTROL
*FOUR SPEAKER ATTENUATORS WITH INDEPENDENT ATTENUATION CONTROL
STEREODECODER:
*ADJUSTMENT FREE INTEGRATED 456KHz
   VCO
*HIGH CUT CONTROL
*STEREO BLEND
NOISEBLANKER:
*INTEGRATED HIGH-PASS FILTER
*NOISE RECTIFIER OUTPUT FOR QUALITY
 DETECTION
*PROGRAMMABLE TRIGGER THRESHOL D
PAUSEDETECTOR:
*PROGRAMMABLE THRESHOLD

ALL FUNCTIONS PROGRAMMABLEVI A I²  C BUS

The TDA7340 I²  Cbus controlled audio signal processorcontainsall signal processing blocks of a high performance car radio, including audioprocessor, stereodecoder, noise blanker, pause detectorand different mute functions.
The use of BICMOS technologyallows the implementation of several filter functions with switched
capacitor techniques like fully integrated, adjustment free PLL Loop filter, pilot detector with integrator and two 19KHznotchfilters.
This minimizes the number of external components.
Due to a highly linear signal processing, using
CMOS-switching techniques instead of standard bipolar multipliers, very low distortion and very low noise are obtained also in the stereodecoder part. The TDA7340 contains several new features like softmute, zero-crossing mute and pause detector.
Very low Dc stepping is obtained by use of a BICMOS technology.