
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
System Diagram
2.7V TO 5.5V
10µF
1µF
IN1+
IN1-
IN2+
IN2-
VCC
MAX9719
INL+
OUTL+
INL-
OUTL-
INR+
INR-
GND
SHDN
OUTR+
OUTR-
BIAS
0.1µF
2.7V TO 5.5V
Q
MAX961 VCC
Q
IN-
IN+
220kΩ
0.1µF
0.1µF
SHDN
1µF
MAX9722B
INL
OUTL
1µF
INR
OUTR
2.7V TO 5.5V
PVDD
PVSS
SVDD
SVSS
1µF
0.1µF
C1P CIN
1µF
1µF
AUTOMATIC HEADPHONE DETECTION AND SPEAKER DISABLE CIRCUIT
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