Details, datasheet, quote on part number: TDA7435D
PartTDA7435D
CategoryAutomotive
DescriptionDigitally Controlled Audio Processor With LouDSPeakers Equalizer
CompanyST Microelectronics, Inc.
DatasheetDownload TDA7435D datasheet
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Features, Applications

DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER

INPUT - FOUR HIGH PASS CHANNELS - TWO AUX STEREO CHANNELS VOLUME CONTROL IN 1dB STEPS WITH GAIN TO 15dB SOFT MUTE AND DIRECT MUTE FOUR AUXILIARY CHANNELS: - TWO SPEAKERS CONTROL IN 1dB STEP - TWO CHANNELS MULTIPLEXED WITH THE HIGH PASS CHANNELS ALL FUNCTIONS PROGRAMMABLE VIA SERIAL I2 CBUS DESCRIPTION The audioprocessor is an upgrade of the TDA731X audioprocessor family. 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. BLOCK DIAGRAM

CSM HP FILTER HP FILTER HP FILTER SOFT MUTE HP FILTER 3

A second programmable high pass filtering provides the loudspeakers equalization. The soft Mute function is implemented andcan be activated in two ways: 1 Via serial bus (Mute byte, bit D0) 2 Directly on pin 3 through an I/O line of the microcontroller Very low DC stepping is obtained by use of a BICMOS technology.

Symbol VS 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 Value 65 Unit °C/W

Symbol VS VCL THD S/N SC Parameter Supply Voltage Max. input signal handling Total Harmonic Distortion = 1KHz Signal to Noise Ratio Channel Separation = 1KHz Input Gain AUX1 1dB step 0 Min. 6 2.1 Typ. Max. 10.2 Unit V Vrms % dB

ELECTRICAL CHARACTERISTICS (VS = 50; Tamb = 25°C; all gains = 1KHz. Refer to the test circuit, unless otherwise specified.)

Symbol Parameter Test Condition Min. Typ. Max. Unit K VRMS dB mV

RI VCL SI GI MIN GI MAX Gstep Ea VDC Input Resistance Clipping Level Input Separation Minimum Input Gain Maximum Input Gain Step Resolution Set Error DC Steps Adiacent Gain Steps GIIN to GIMAX d

CRANGE Astep AMUTE EA VDC Control Range Step Resolution Output Mute Attenuation Set Error DC Steps to -40dB Data Word to -40dB Adjacent Attenuation Steps dB mV

Vclip RL RO VDC Clipping Level Output Load Resistance Output Impedance DC Voltage Level d Vrms V K Vrms K M Vrms

RI VCL SI GI Input Resistance Clipping Level Input Separation Gain Input Mute
R1 R2 VCL Resistance at pin HP1 Resistance at pin HP2 Clipping Level HIGHPASS BYTE XXXX1XXX d

AMUTE TDON TDOFF Mute Attenuation ON Delay Time OFF Current CCSM I = IMAX CCSM I = IMIN VCSM I = IMAX VCSM I = IMIN ms µA


 

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