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MAX9777/MAX9778
HPF
HPF
MICROCONTROLLER
CODEC
MAX9777
INR2
INR1
INL2
INL1
BIAS
1µF
100µF
0.68µF
0.68µF
0.68µF
0.68µF
0.047µF
0.047µF
220µF
220µF
27.4kΩ
27.4kΩ
47kΩ
10kΩ
10kΩ
680kΩ
33.2kΩ
33.2kΩ
15kΩ
15kΩ
15kΩ
15kΩ
15kΩ
10kΩ1kΩ
1kΩ
15kΩ
SCL
SDA
ADD
INT
SHDN
GND
18
9, 13, 23, 27
PGND
GAINLB
GAINLA
OUTL+
OUTL-
OUTR+
GAINRA
GAINRB
OUTR-
HPS
V
DD
4.5V TO 5.5V
4.5V TO 5.5V
PV
DD
4.5V TO 5.5V
0.1µF
17
5
6
19
20
28
1
15
2
14
16
22
21
24
26
12
10
7
8
11, 25
3, 4
Typical Application Circuits
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
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21