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TDA7439DS Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7439DS Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 16 page  TDA7439DS THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR INPUT MULTIPLEXER - 4 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 TDA7439DS 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. The AC signal setting is obtained by resistor net- works and switches combined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and DC stepping are obtained April 1999 0/30dB 2dB STEP MUXOUTL VOLUME VOLUME TREBLE TREBLE TREBLE(L) MIDDLE MIDDLE MUXOUTR TREBLE(R) BOUT(L) SPKR ATT LEFT LOUT SCL SDA DIG_GND ROUT D97AU621 I 2CBUS DECODER + LATCHES 100K 100K 100K 100K G L-IN1 L-IN2 L-IN3 L-IN4 100K 100K 100K 100K R-IN1 R-IN2 R-IN3 R-IN4 G INPUT MULTIPLEXER + GAIN MOUT(L) BASS BIN(L) BASS SPKR ATT RIGHT MIN(R) MOUT(R) BOUT(R) BIN(R) SUPPLY CREF AGND VS MIN(L) 27 4 5 6 7 3 2 1 28 21 22 20 26 24 25 9 191011 1213 23 8 181716 1415 RM RB RM RB VREF BLOCK DIAGRAM ORDERING NUMBERS: TDA7439DS SO28 ® 1/16 |
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