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TDA7449 Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7449 Datasheet(HTML) 1 Page - STMicroelectronics |
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TDA7449 TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR INPUT MULTIPLEXER - 2 STEREO INPUTS - SELECTABLE INPUT GAIN FOR OPTIMAL ADAPTATION TO DIFFERENT SOURCES ONE STEREO OUTPUT TREBLE, 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 TDA7449 is a volume tone (bass and treble) balance (Left/Right) processor for quality audio applications in TV 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) BASS BASS MUXOUTR TREBLE(R) SPKR ATT LEFT LOUT SCL SDA DIG_GND ROUT D98AU847A I 2CBUS DECODER + LATCHES 100K 100K G L-IN1 L-IN2 100K 100K R-IN1 R-IN2 G INPUT MULTIPLEXER + GAIN BOUT(L) SPKR ATT RIGHT BIN(R) BOUT(R) SUPPLY CREF AGND VS BIN(L) 5 8 9 7 6 19 20 18 4 2 3 11 17 12 13 1 10 16 15 14 RB RB VREF BLOCK DIAGRAM ORDERING NUMBER: TDA7449 DIP20 1/17 |
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