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TDA7440D Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7440D Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 17 page  1/17 TDA7440 April 2010 1 FEATURES INPUT MULTIPLEXER – 4 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 2 DESCRIPTION The TDA7440D is a volume tone (bass and treble) balance (Left/Right) processor for quality audio applications in 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 TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR Figure 2. Block Diagram 0/30dB 2dB STEP MUXOUTL INL VOLUME VOLUME TREBLE TREBLE TREBLE(L) MUXOUTR INR TREBLE(R) BOUT(L) SPKR ATT LEFT LOUT SCL SDA DIG_GND ROUT D98AU883 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 BASS BIN(L) BASS SPKR ATT RIGHT BOUT(R) BIN(R) SUPPLY CREF AGND VS 27 4 5 6 7 3 2 1 28 21 22 20 26 24 25 10 11 19 12 13 23 8 9 18 14 15 RB RB VREF Figure 1. Package Table 1. Order Codes Order code Package TDA7440D SO-28 TDA7440D013TR Tape & Reel SO-28 REV. 4 |
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