TDA7435

TDA7435 DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER INPUT - FOUR HIGH PASS CHANNELS - TWO AUX STEREO CHANNELS VOLUME CONTROL IN 1dB STEPS WITH GAIN UP 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 TDA7435 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 22 21 20 19 18 17 16 15 6 7 MUX HP FILTER HP FILTER HP FILTER SOFT MUTE HP FILTER 3 SDA SCL DGND AGND CREF 27 2 SO28 ORDERING NUMBER: TDA7435D 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. VCC 28 12 26 25 24 23 HP FL 1 HP FL 2 HP FR 1 HP FR 2 HP RL 1 HP RL 2 HP RR 1 HP RR 2 AUX 2 IN L AUX 2 IN R I C BUS SUPPLY OUT REF 10 11 13 14 9 8 5 HP FL OUT HP FR OUT HP RL OUT HP RR OUT AUX 2 OUT L AUX 2 OUT R AUX 1 OUT L 1 AUX 1 IN L AUX 1 IN R 2 GAIN 0-15dB/1dB step ATTENUATOR 0/-79dB ATTENUATOR 0/-79dB 4 AUX 1 OUT R D96AU437A November 1996 1/10 TDA7435 ABSOLUTE MAXIM...