PA4867
TYPICAL APPLICATION CIRCUIT
R
f
20KΩ
CMOS IC
R
f
20KΩ
Audio
Input
C
I
0.33µF
V
DD
C
S
0.1µF
R
I
20KΩ
R
I
4, 17
9 -IN A
2
6 -IN A
1
7 +IN A
10 MUX CTRL
1 Shutdown
20 HP-IN
14 Bypass
11 -IN B
2
M
U
X
M
U
X
GND
2, 7, 19
AmpAM
-OUT A 5
20KΩ
20KΩ
AmpAS
Audio
Input
20KΩ
C
I
0.33µF
20KΩ
Bias
Control
Voltage
Bypass
And
De-pop
Noise
AmpBM
Control Pin
3
Ring
C
B
2.2µF
Audio
C
I
Input 0.33µF R
I
20KΩ
R
I
Audio
Input
20KΩ
C
I
0.33µF
+OUT A
Control Pin
-OUT B 16
20KΩ
20KΩ
AmpBS
Sleeve
Tip
15 -IN B
1
13 +IN B
Headphone
20KΩ
Thermal
Shutdown
18
+OUT B12
R
f
20KΩ
R
f
20KΩ
Figure 1. Typical Audio Amplifier Application Circuit
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 7
QW-R502-125.A