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| PA3202_09 Datasheet, PDF (7/11 Pages) Unisonic Technologies – 2-W STEREO AUDIO POWER AMPLIFIER WITH MUTE | |||
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PA3202
 TYPICAL APPLICATION CIRCUIT
CMOS IC
CIRLINE RIR LINE
1µF 10KΩ
RLINEIN
CIRHP
1µF
RIRHP
10KΩ
RHPIN
RBYPASS
CBR
0.1µF
System MUTE IN
Control
MUTE OUT
see Note 1 SHUTDOWN
CILHP
1µF
RILHP
10KΩ
CILLINE
1µF
RILLINE
10KΩ
LBYPASS
CBL
1µF
LHPIN
LLINEIN
RFRHP
10KΩ
RFRLINE
50KΩ
CFRLINE
5pF
Right
MUX
Logic
Control
Left
MUX
Bias,
Thermal
Shutdown
ROUT+
ROUT-
RVDD
CSR
VDD
0.1µF
100KΩ
(see Note 2)
SE/BTL
100KΩ
HP/LINE
0.1µF
COUTR
330µF
1KΩ
LVDD
CSR
VDD
0.1µF
(see Note 2)
1KΩ
COUTL
330µF
LOUT+
LOUT-
RFLLINE
50KΩ
CFLLINE
5pF
RFLHP
10KΩ
Note:1. This connection is for ultra-low current in shutdown mode.
2. A 0.1 μF ceramic capacitor should be placed as close as possible to the IC. For filtering lower-
frequency noise signals, a larger aluminum electrolytic capacitor of 10 μF or greater should be
placed near the audio power amplifier.
PA3202 Full Configuration Application Circuit
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 11
QW-R502-106.C
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