Details, datasheet, quote on part number: TDA7437
PartTDA7437
CategoryAutomotive
DescriptionDigitally Controlled Audio Processor
CompanyST Microelectronics, Inc.
DatasheetDownload TDA7437 datasheet
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Features, Applications

INPUT MULTIPLEXER - FOUR STEREO, ONE MONO INPUT, AND ONE DIFFERENTIAL INPUT - SELECTABLE INPUT GAIN FOR OPTIMAL ADAPTATION TO DIFFERENT SOURCES FULLY PROGRAMMABLE LOUDNESS FUNCTION VOLUME CONTROL IN 1dB STEPS INCLUDING GAIN TO 16dB ZERO CROSSING MUTE, SOFT MUTE AND DIRECT MUTE BASS AND TREBLE CONTROL FOUR SPEAKER ATTENUATORS - FOUR INDEPENDENT SPEAKERS CONTROL IN 1dB STEPS FOR BALANCE AND FADER FACILITIES PAUSE DETECTOR PROGRAMMABLE THRESHOLD ALL FUNCTIONS PROGRAMMABLE VIA SERIAL I2 CBUS DESCRIPTION The audioprocessor is an upgrade of the TDA731X audioprocessor family. PIN CONNECTION

Due to a highly linear signal processing, using CMOS-switching techniques instead of standard bipolar multipliers, very low distortion and very low noise are obtained. Several new features like softmute, 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 BICMOS technology.

LOUD_L DIFFGND_L DIFF_L STEREO2_L STEREO3_L CSM IN_L MUXOUT_L MID_RI
OUT_RF OUT_LR MID_LI MID_LO OUT_RR SMEXT BASS_RO BASS_RI BASS_LO BASS_LI MID_RO

Symbol AVDD, DVDD Tamb Tstg Operating Supply Voltage Operating Ambient Temperature Storage Temperature Range Parameter Value to 150 Unit V °C

Symbol Rth j-amb Parameter Thermal Resistance Junction-pins Max. Value 150 Unit °C/W

Symbol AVDD, DVDD VCL THD S/N SC Parameter Supply Voltage (AVDD and DVDD must be at the same potential) Max. input signal handling Total Harmonic Distortion = 1KHz Signal to Noise Ratio Channel Separation = 1KHz Input Gain 1dB step Volume Control 1dB step Treble Control 2dB step Bass Control 2dB step Middle Control 2dB step Fader and Balance Control 1dB step Loudness Control 1dB step Mute Attenuation Min. 6 2.1 Typ. Max. 10.2 0.8 Unit V Vrms % dB

STEREO4_L INGAIN MIDDLE VOLUME + LOUDN TREBLE BASS S-MUTE
STEREO3_R INGAIN TREBLE MIDDLE VOLUME + LOUDN BASS
5 MUTE CONTROL SOFT, ZERO SPKR ATT 32 OUT_RF

 

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