PT2301 Просмотр технического описания (PDF) - Princeton Technology
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PT2301 Datasheet PDF : 5 Pages
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1 Watt Audio Power Amplifier
APPLICATION CIRCUIT I (PT2301-A)
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2301
External
MIC IN
Microphone Jack
Internal MIC IN
MIC OUT
L1L
L2L
C9 1uF R3 10K
C8 1uF R4 10K
C2 1uF
C7 1uF RL1 24K
C6 1uF
RL2 24K
VCC
SCL
SDA
100uF
C4 1uF RR2 24K
L2R
C5 1uF
L1R
RR1 24K
VCC
4.7K
4.7K
Cb1
10uF
1 L1L
MIC_SENSE 24
2 L2L
HP_SENSE 23
3 MIC1
LOUT 22
4 VSS2
VP1 21
5 SCL
SP+ 20
6 SDA
7 VCC
VEE 19
PT2301-A SP- 18
8 MICOUT
VP2 17
9 MIC2
ROUT 16
10 L2R
VSS1 15
11 L1R
/SHUTDOWN 14
12 REF
MUTE 13
Cb
1uF
VCC
Headphone Jack
8 ohm
VCC
100uF
C3
100uF
/SHUTDOWN
MUTE
Notes
1. The (+) polarity of DC block capacitor installed in the I/O pin of the PT2301 should face towards the
higher potential.
2. HP_SENSE (Pin 23) must be connected to Pin22 LOUT.
3. The gain setting resistors (R3、R4、RL1、RL2、RR1、RR2 ) should keep as close as possible with
the PT2301 chip to prevent pick up noises.
4. DO NOT CONNECT HEADPHONE COMMON (VEE) TO OTHER AUDIO EQUIPMENT! THIS
MAY CAUSES IC DAMAGE.
PT2301 V1.4
-3-
April, 2006
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