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參數資料
型號: TS4990IST
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
封裝: LEAD FREE, MSOP-8
文件頁數: 3/32頁
文件大小: 714K
代理商: TS4990IST
TS4990
Electrical characteristics
11/32
Figure 20.
PSRR vs. DC output voltage
Figure 21.
PSRR vs. DC output voltage
-2.5 -2.0 -1.5 -1.0 -0.5
0.0
0.5
1.0
1.5
2.0
2.5
-70
-60
-50
-40
-30
-20
-10
0
Vcc = 2.6V
Vripple = 200mVpp
RL = 8
Ω
Cb = 1
μF
AV = 2
Tamb = 25
°C
PSRR
(
d
B)
Differential DC Output Voltage (V)
-2.5 -2.0 -1.5 -1.0 -0.5
0.0
0.5
1.0
1.5
2.0
2.5
-50
-40
-30
-20
-10
0
Vcc = 2.6V
Vripple = 200mVpp
RL = 8
Ω
Cb = 1
μF
AV = 10
Tamb = 25
°C
PSRR
(
d
B)
Differential DC Output Voltage (V)
Figure 22.
Output power vs. power supply
voltage
Figure 23.
PSRR vs. DC output voltage
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
THD+N=10%
RL = 4
Ω
F = 1kHz
BW < 125kHz
Tamb = 25
°C
THD+N=1%
Out
put
power
(
W
)
Vcc (V)
-2.5 -2.0 -1.5 -1.0 -0.5
0.0
0.5
1.0
1.5
2.0
2.5
-60
-50
-40
-30
-20
-10
0
Vcc = 2.6V
Vripple = 200mVpp
RL = 8
Ω
Cb = 1
μF
AV = 5
Tamb = 25
°C
PSRR
(
d
B)
Differential DC Output Voltage (V)
Figure 24.
PSRR at F = 217 Hz vs.
bypass capacitor
Figure 25.
Output power vs. power supply
voltage
0.1
1
-80
-70
-60
-50
-40
-30
Av=10
Vcc:
2.6V
3.3V
5V
Av=5
Vcc:
2.6V
3.3V
5V
Av=2
Vcc:
2.6V
3.3V
5V
Tamb=25
°C
PSRR
at
217Hz
(
d
B)
Bypass Capacitor Cb ( F)
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
THD+N=10%
RL = 8
Ω
F = 1kHz
BW < 125kHz
Tamb = 25
°C
THD+N=1%
Out
put
power
(
W
)
Vcc (V)
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