Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA7438 Datenblatt(PDF) 1 Page - STMicroelectronics |
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TDA7438 Datenblatt(HTML) 1 Page - STMicroelectronics |
1 / 19 page 1/19 TDA7438 June 2004 1 FEATURES ■ 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 2 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. 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. THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR Figure 2. Block Diagram 0/30dB 2dB STEP MUXOUTL INL VOLUME VOLUME TREBLE TREBLE TREBLE(L) MIDDLE MIDDLE MUXOUTR INR TREBLE(R) BOUT(L) SPKR ATT LEFT LOUT SCL SDA DIG_GND ROUT D96AU488A I 2CBUS DECODER + LATCHES 100K 100K 100K G L-IN1 L-IN2 L-IN3 100K 100K 100K R-IN1 R-IN2 R-IN3 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 3 4 5 2 1 28 21 22 20 26 24 25 8 9 19 10 11 12 13 23 6 7 18 17 16 14 15 RM RB RM RB VREF REV. 7 Figure 1. Package Table 1. Order Codes Part Number Package TDA7438 DIP28 TDA7438D SO28 TDA7438D013TR Tape & Reel SO28 DIP28 |
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Ähnliche Beschreibung - TDA7438 |
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