Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2W × 2 Class AB Audio Power Amplifier
PT2303
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, VDD=5V, bandwidth=22~22KHz)
Parameter
Symbol
Condition
Min.
Typ.
Max. Unit
Supply voltage
VDD
3
5
6
V
SE Mode
4
6
10
mA
Operating current
Two channels gain error
THD+N
Is
BTL Mode
Shutdown=ON
Ri=Rf=20KΩ
6
0.1
-1
8
0.5
0
12
1
+1
µA
dB
Gerr
THD
Po=0.2W, RL=4Ω
0.03
0.05
0.07
%
Po=1W, RL=4Ω
Po=50mW, RL=32Ω
THD=1%, RL=8Ω
THD=10%, RL=8Ω
THD=1%, RL=4Ω
THD=10%, RL=4Ω
THD=1%, RL=32Ω
THD=10%, RL=32Ω
0.06
0.03
1.0
1.2
1.4
1.8
80
0.08
0.05
1.1
1.4
1.6
2.0
85
0.15
0.08
1.2
1.6
1.8
2.1
90
BTL
SE
W
Power output
Po
mW
100
110
120
Signal-to-Noise
Residual noise
Output offset
SNR
Vno
Voff
A-Weighted
A-weighted
+OUT ~ -OUT
95
-
2
100
35
10
90
85
-
50
30
100
95
80
50
140
-
dB
µV
mV
BTL
SE
BTL
SE
80
80
60
40
-
85
0.45
-
Channel separation
CS
PSRR
TH
F=1KHz
dB
dB
Power Signal-to-Noise
repel rate
70
45
F=100Hz
Overheat close
Back to work
Shutdown ON
Shutdown OFF
SE
-
-
130
100
0.6
0.15
0.8
0.2
Temperature protect
Shutdown voltage
SE/BTL voltage
℃
VDD=3~5V
Shutdown pin
-
VSD
VSB
VDD
VDD
0.2
-
0.3
0.75
-
VDD=3~5V
BTL
PT2303 V1.2
- 8 -
December, 2007
PTC [ PRINCETON TECHNOLOGY CORP ]
