®
TDA7401
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER
FOUR HIGH PASS CHANNELS ONE STEREO LOW PASS...
®
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 BI
CMOS 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...