TDA7401

® TDA7401 DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER FOUR HIGH PASS CHANNELS ONE STEREO LOW PASS CHANNEL WITH GAIN CONTROL DIRECT MUTE PIN FULLY PROGRAMMABLE VIA I2C BUS DESCRIPTION The TDA7401 is an upgrade of the TDA7435 audioprocessor. Due to a highly linear signal processing, using CMOS-switching techniques very low distortion and very low noise are obtained. Second order high pass and low pass filters with programmable corner frequencies provide the loudspeaker equalization. BLOCK DIAGRAM SO28 ORDERING NUMBER: TDA7401D Very low DC stepping is obtained by using a BICMOS technology. MUTE 22 21 20 19 18 17 16 15 HP FILTER HP FILTER HP FILTER MUTE HP FILTER 3 SDA SCL DGND AGND CREF 27 26 25 24 23 VCC 28 12 HP FL 1 HP FL 2 HP FR 1 HP FR 2 HP RL 1 HP RL 2 HP RR 1 HP RR 2 I2C BUS SUPPLY OUT REF 10 11 13 14 9 MUX 8 HP FL OUT HP FR OUT HP RL OUT HP RR OUT AUX 2 OUT L AUX 2 OUT R AUX 1 IN L AUX 1 IN R 1 2 GAIN +20/-79dB 4 5 7 CR2 6 CL2 D98AU822A CR1 CL1 January 1999 1/10 TDA7401 ABSOLUTE MAXIMUM RATINGS Symbol VS Tamb Tstg Operating Supply Voltage Operating Ambient Temperature Storage Temperature Range Parameter Value 10.5 -40 to 85 -55 to 150 Unit V °C °C PIN CONNECTION AUX 1 IN L AUX 1 IN R MUTE CR1 CL1 CL2 CR2 AUX 2 OUT R AUX 2 OUT L HP FL OUT HP FR OUT OUT REF HP RL OUT HP RR OUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D98AU823A 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC SDA SCL DGND AGND CREF HP FL 1 HP FL 2 HP FR 1 HP FR 2 HP RL 1 H...