PT2305-S 查看數據表（PDF） - Princeton Technology
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PT2305-S Datasheet PDF : 27 Pages
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2.5W × 2 Class AB Audio Power Amplifier
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2305
ELECTRICAL CHARACTERISTICS
(Unless otherwise, Vcc=5V, bandwidth=22 ~ 22KHz)
Parameter
Symbol
Conditions
Supply voltage
VDD
Operating current
Two channels gain error
Is
Gerr
Vin=0V
Vshutdown=VDD
RIN=RF=20KΩ
THD+N
THD
Po=1W, RL=8Ω
Po=340mW, RL=32Ω
THD=1%, RL=3Ω
THD=1%, RL=4Ω
Power output
Po
THD=10%, RL=4Ω
THD=1%, RL=8Ω
THD=10%, RL=8Ω
Signal-to-noise ratio
SNR
Pout=1.1W, RL=8Ω,
A-Weighted
Residual noise
Vno
A-Weighted
Output offset
Voff
Vin=0V, +OUT ~ -OUT
Channel separation
CS
F=1KHz
Power supply
rejection ratio
Volume control range
PSRR
Vatt
CB=1.0µF, f=120Hz
VRIPPLE=200mVrms: RL= 8Ω
DC Vol=5V F=1KHz
DC Vol=0V
Volume setup step
Gstep
Vatt=0 ~ -51dB
Mute
mute
DC Vol=0V
Temperature protect
TH
TSSOP
SOP
Overheat close
Back to work
Overheat close
Back to work
Shutdown voltage
VSD
Shutdown on
Shutdown off
Mute voltage
VMT
Mute on
Mute off
Min.
2.7
-
-
-
-
-
-
-
-
1.0
-
-
25
-
-
-
-0.75
-75
-
-78
-
-
-
-
0.5
-
0.5
-
Typ.
5
15
0.7
0
0.3
1
2.2
2
2.5
1.1
1.5
Max. Unit
6V
30 mA
2.0 µA
±1 dB
-
-
%
-
-
-W
-
-
93
- dB
40 50 µV
10 ±50 mV
70
- dB
74
- dB
0
-78
+0.75
-
dB
0
1 dB
-
- dB
150 -
105
-
℃
135 -
105 -
0.6
0.2
-
0.3
VDD
0.6
0.2
-
0.3
VDD
PT2305 V1.1
-9-
May, 2005
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