PA4867
CMOS IC
TYPICAL APPLICATION CIRCUIT
Rf
20KΩ
Rf
20KΩ
VDD
CS
0.1µF
CI
0.33µF
Audio
Input
4, 17
RI
-IN A2
9
2, 7, 19
GND
M
U
X
20KΩ
-OUT A
RI
5
3
6
7
-IN A1
+IN A
AmpAM
20KΩ
20KΩ
20KΩ
CI
0.33µF
Audio
Input
20KΩ
Ring
Control Pin
10
1
MUX CTRL
Bias
Control
Shutdown
HP-IN
Voltage
Bypass
And
De-pop
Noise
AmpAS
20
14
CB
2.2µF
+OUT A
Bypass
Sleeve
11 -IN B2
Control Pin
Tip
M
U
X
Audio
Input
CI
0.33µF
15
13
-IN B1
+IN B
-OUT B
16
RI
AmpBM
Headphone
20KΩ
20KΩ
20KΩ
20KΩ
RI
Thermal
Audio
Input
18
12
20KΩ
Shutdown
AmpBS
CI
0.33µF
+OUT B
Rf
20KΩ
Rf
20KΩ
Figure 1. Typical Audio Amplifier Application Circuit
UNISONIC TECHNOLOGIES CO., LTD
4 of 7
QW-R502-125.A
www.unisonic.com.tw
UMC [ UMC CORPORATION ]
