
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Functional Diagrams (continued)
MAX9719A
AV = 2
fC = 1Hz
CIN = 10µF
RIN = 10kΩ
RF = 20kΩ
2.7V TO 5.5V
SUPPLY
1.0µF
INVERTING
DIFFERENTIAL
INPUT
CIN
(OPTIONAL)
NONINVERTING
DIFFERENTIAL
INPUT
CIN
(OPTIONAL)
CBIAS
0.1µF
VCC
MAX9719B
MAX9719C
MAX9719D
INL-
R1
INL+
R1
BIAS
BIAS
GENERATOR
SHDN
SHUTDOWN
CONTROL
INVERTING
CIN
DIFFERENTIAL
INR-
R1
INPUT (OPTIONAL)
NONINVERTING
CIN
INR+
R1
DIFFERENTIAL
INPUT (OPTIONAL)
GND
R2
OUTL+
OUTL-
R2
R2
OUTR+
OUTR-
R2
2.7V TO 5.5V
SUPPLY
1.0µF
INVERTING
CIN
RIN
DIFFERENTIAL
INPUT (OPTIONAL)
NONINVERTING
CIN
RIN
DIFFERENTIAL
INPUT (OPTIONAL)
CBIAS
0.1µF
INVERTING
CIN
RIN
DIFFERENTIAL
INPUT (OPTIONAL)
NONINVERTING
CIN
RIN
DIFFERENTIAL
INPUT (OPTIONAL)
RF
RF
VCC
MAX9719A
INL-
OUTL+
INL+
BIAS
SHDN
BIAS
GENERATOR
INR-
OUTL-
SHUTDOWN
CONTROL
OUTR+
INR+
GND
RF
OUTR-
RF
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