TDA7438 PDF Datasheet
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Description
This is THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR. ®
TDA7438
THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR
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 DESCRIPTION The TDA7438 is a volume tone (bass, middle and treble) balance (Left, Right) processor for quality audio applications in car-radio and Hi-Fi systems. Selectable input gain is provided. Control of all the functions is accomplished by serial bus. BLOCK DIAGRAM
MUXOUTL L-IN1 3 100K 4 100K 5 100K G VOLUME TREBLE 6 INL 7 TREBLE(L) 18
SO28
DIP28
ORDERING NUMBER: TDA7438D (SO28) TDA7438 (DIP28)
The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. Thanks to the used BIPOLAR, CMOS Technology, Low Distortion.