Instruction Manual
MAX9756/MAX9757/MAX9758
2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
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System Diagram
CODEC
3V TO 5.5V
MAX9756
INR
4.5V TO 5.5V 3V TO 5.5V
INL
CPV
DD
REGEN
OUT
BEEP
1μF
1μF
180kΩ
1μF
1μF
0.033μF
0.1μF
1μF
1μF
1μF
μC
C1P
C1N
PREF
BIAS
GND PGND
SHDN
OUTL+
OUTL-
VOL
CPV
SS
V
SS
SET
BIAS
OUTR+
GAIN1
GAIN2
OUTR-
HPL
HPS
HPR
V
DD
HPV
DD
PV
DD
IN
10μF
CPGND
HPV
DD
1μF
47kΩ
GAIN3
DR
CT
1μF