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TS4871 数据表(PDF) 9 Page - STMicroelectronics

部件名 TS4871
功能描述  Output rail-to-rail 1 W audio power amplifier with standby mode
PDF  42 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS4871 数据表(HTML) 9 Page - STMicroelectronics

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Figure 14. Power supply rejection ratio (PSRR) vs
input capacitor
10
100
1000
10000
100000
-60
-50
-40
-30
-20
-10
Vcc = 5, 3.3 & 2.6V
Rfeed = 22kΩ, Rin = 22k
Cb = 1µF
Rg = 100Ω, RL = 8Ω
Tamb = 25°C
Cin=22nF
Cin=100nF
Cin=220nF
Cin=330nF
Cin=1µF
Frequency (Hz)
Figure 15. Power supply rejection ratio (PSRR) vs
feedback resistor
10
100
1000
10000
100000
-80
-70
-60
-50
-40
-30
-20
-10
Rfeed=10kΩ
Rfeed=22kΩ
Rfeed=47kΩ
Rfeed=110kΩ
Vcc = 5, 3.3 & 2.6V
Cb = 1µF & 0.1µF
Vripple = 200mVrms
Input = floating
RL = 8Ω
Tamb = 25°C
Frequency (Hz)
Figure 16. Pout @ THD + N = 1% vs supply voltage
vs RL
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
32Ω
16Ω
4Ω
6Ω
Gv = 2 & 10
Cb = 1µF
F = 1kHz
BW < 125kHz
Tamb = 25°C
8Ω
Vcc (V)
Figure 17. Pout @ THD + N = 10% vs supply voltage
vs RL
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
4Ω
6Ω
8Ω
16Ω
32Ω
Gv = 2 & 10
Cb = 1µF
F = 1kHz
BW < 125kHz
Tamb = 25°C
Vcc (V)
Figure 18. Power dissipation vs Pout Vcc=5 V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
RL=16Ω
RL=8Ω
Vcc=5V
F=1kHz
THD+N<1%
RL=4Ω
Output Power (W)
Figure 19. Power dissipation vs Pout Vcc=3.3 V
0.0
0.2
0.4
0.6
0.8
0.0
0.1
0.2
0.3
0.4
0.5
0.6
RL=4Ω
RL=8Ω
Vcc=3.3V
F=1kHz
THD+N<1%
RL=16Ω
Output Power (W)
TS4871
Electrical characteristics curves
DS2547 - Rev 10
page 9/42



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