TDA7401 Datasheet, PDF (4/10 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER

TDA7401
Figure 1. HP Filter
56.5K
18.7K
9.4K
7.7K
56K
4.4K
3.6K
12.5K
100nF
100nF
HP2
+
HP1
-
6.2K 3.5K 2.1K 3.8K 4.7K 9.4K 28K
28K
R1 = EQUIVALENT RESISTANCE AT PIN HP1
R2 = EQUIVALENT RESISTANCE AT PIN HP2
Figure 2. Application Circuit
µP
D98AU836
100nF 100nF
HP FL 1 22
HP FL IN
HP FL 2 21
100nF 100nF
HP FR 1 20
HP FR IN
HP FR 2 19
100nF 100nF
HP RL 1 18
HP RL IN
HP RL 2 17
100nF 100nF
HP RR 1 16
HP RR IN
HP RR 2 15
220nF
AUX L IN
AUX R IN
220nF
AUX 1 IN L 1
AUX 1 IN R 2
HP FILTER
HP FILTER
HP FILTER
HP FILTER
MUTE
SDA
3
27 26 25
I²C BUS
MUTE
MUX
10µF
100nF
V_CC
24 23 28
V_CC
10µF
SUPPLY
12 OUT REF
OUT REF
10 HP FL OUT
HP FL OUT
11 HP FR OUT
HP FR OUT
13 HP RL OUT
HP RL OUT
14 HP RR OUT
HP RR OUT
9 AUX L OUT
AUX L OUT
8 AUX R OUT
AUX R OUT
GAIN
+20/-79dB
4
CR1
100nF
5
7
CL1 CR2
100 100
nF nF
6
CL2
100nF
D98AU835
4/10