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TDA7449L датащи(PDF) 1 Page - STMicroelectronics |
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TDA7449L датащи(HTML) 1 Page - STMicroelectronics |
1 / 14 page 1/14 TDA7449L June 2004 1FEATURES ■ INPUT MULTIPLEXER – 2 STEREO INPUTS – SELECTABLE INPUT GAIN FOR OPTIMAL ADAPTATION TO DIFFERENT SOURCES ■ ONE STEREO OUTPUT ■ 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 2DESCRIPTION The TDA7449L is a volume control and balance (Left/Right) processor for quality audio applica- tions 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. LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR Figure 2. Block Diagram 0/30dB 2dB STEP MUXOUTL VOLUME VOLUME MUXOUTR SPKR ATT LEFT LOUT SCL SDA DIG_GND ROUT D98AU868 I 2CBUS DECODER + LATCHES 100K 100K G L-IN1 L-IN2 100K 100K R-IN1 R-IN2 G INPUT MULTIPLEXER + GAIN SPKR ATT RIGHT SUPPLY CREF AGND VS 5 8 9 7 6 19 20 18 4 2 3 11 1 10 VREF REV. 3 Figure 1. Package Table 1. Order Codes Part Number Package TDA7449L DIP20 DIP20 |
Аналогичный номер детали - TDA7449L |
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Аналогичное описание - TDA7449L |
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