DESCRIPTION
The TDA7438 is a volume tone (bass, middle and treble) balance (Left/Right) processor for quality audio applicationsin car-radio and Hi-Fi systems.
Selectable input gain is provided. Control of all the functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net works and switches combined with operational amplifiers.
Thanks to the used BIPOLAR/CMOSTechnology, Low Distortion, Low Noise and DC stepping are obtained.

■ INPUT MULTIPLEXER
   - 3 STEREO INPUTS
   - SELECTABLE INPUT GAIN FOR OPTIMAL
      ADAPTATION TO DIFFERENT SOURCES
■ ONE STEREO OUTPUT
■ TREBLE, MIDDLE AND BASS CONTROL IN
   2.0dB STEPS
■ VOLUME CONTROL IN 1.0dB STEPS
■ TWO SPEAKER ATTENUATORS:
   - TWO INDEPENDENT SPEAKER CONTROL
      IN 1.0dB STEPS FOR BALANCE FACILITY
   - INDEPENDENT MUTE FUNCTION
■ ALL FUNCTION ARE PROGRAMMABLE VIA
   SERIAL BUS