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TDA7437N Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7437N Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 23 page  1/23 TDA7437N October 2003 s INPUT MULTIPLEXER – FOUR STEREO, ONE MONO INPUT, AND ONE DIFFERENTIAL INPUT – SELECTABLE INPUT GAIN FOR OPTIMAL ADAPTATION TO DIFFERENT SOURCES s FULLY PROGRAMMABLE LOUDNESS FUNCTION s VOLUME CONTROL IN 1dB STEPS INCLUDING GAIN UP TO 16dB s ZERO CROSSING MUTE, SOFT MUTE AND DIRECT MUTE s BASS AND TREBLE CONTROL s FOUR SPEAKER ATTENUATORS- FOUR INDEPENDENT SPEAKERS CONTROL IN 1dB STEPS FOR BALANCE AND FADER FACILITIES s PAUSE DETECTOR PROGRAMMABLE THRESHOLD s ALL FUNCTIONS PROGRAMMABLE VIA SERIAL I2C BUS DESCRIPTION The audioprocessor TDA7437N is an upgrade of the TDA731X audioprocessor family. Due to a highly linear signal processing, using CMOS-switching techniques instead of standard bi- polar multipliers, very low distortion and very low noise are obtained. Several new features like soft- mute, and zero-crossing mute are implemented.The soft Mute function can be activated in two ways: 1 Via serial bus (Mute byte, bit D0) 2 Directly on pin 28 through an I/O line of the microcontroller Very low DC stepping is obtained by use of a BIC- MOS technology. TQFP44 ORDERING NUMBER: TDA7437N DIGITALLY CONTROLLED AUDIO PROCESSOR PIN DESCRIPTION (Top view) 1 2 3 5 6 4 7 8 9 10 17 11 18 19 20 21 22 44 43 42 41 39 40 38 37 36 35 34 28 27 26 24 23 25 33 32 31 29 30 DIFF_R DIFFGND_R LOUD_R IN_R TREB_R MUXOUT_R MONO STEREO3_R STEREO2_R STEREO4_R STEREO1_R SMEXT BASS_RO BASS_RI BASS_LI MID_RO BASS_LO OUT_RF OUT_LR MID_LI OUT_RR MID_LO D96AU435B 12 13 14 15 16 |
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