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TS4871IST 데이터시트(PDF) 8 Page - STMicroelectronics

부품명 TS4871IST
상세설명  Output rail-to-rail 1 W audio power amplifier with standby mode
PDF  42 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4871IST 데이터시트(HTML) 8 Page - STMicroelectronics

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Figure 8. Open loop frequency response Vcc=5 V,
CL=560 pF
0.3
1
10
100
1000
10000
-40
-20
0
20
40
60
80
100
-220
-200
-180
-160
-140
-120
-100
-80
Frequency (kHz)
Vcc = 5V
CL = 560pF
Tamb = 25°C
Gain
Phase
Figure 9. Open loop frequency response Vcc=3.3 V,
CL=560 pF
0.3
1
10
100
1000
10000
-40
-20
0
20
40
60
80
100
-240
-220
-200
-180
-160
-140
-120
-100
-80
Frequency (kHz)
Vcc = 3.3V
CL = 560pF
Tamb = 25°C
Gain
Phase
Figure 10. Open loop frequency response
Vcc=2.6 V, CL=560 pF
0.3
1
10
100
1000
10000
-40
-20
0
20
40
60
80
100
-240
-220
-200
-180
-160
-140
-120
-100
-80
Frequency (kHz)
Vcc = 2.6V
CL = 560pF
Tamb = 25°C
Gain
Phase
Figure 11. Power supply rejection ratio (PSRR) vs
power supply
10
100
1000
10000
100000
-80
-70
-60
-50
-40
-30
Vcc = 5V, 3.3V & 2.6V
Cb = 1µF & 0.1µF
Vripple = 200mVrms
Rfeed = 22Ω
Input = floating
RL = 8Ω
Tamb = 25°C
Frequency (Hz)
Figure 12. Power supply rejection ratio (PSRR) vs
feedback capacitor
10
100
1000
10000
100000
-80
-70
-60
-50
-40
-30
-20
-10
Cfeed=680pF
Cfeed=330pF
Cfeed=150pF
Cfeed=0
Vcc = 5, 3.3 & 2.6V
Cb = 1µF & 0.1µF
Rfeed = 22kΩ
Vripple = 200mVrms
Input = floating
RL = 8Ω
Tamb = 25°C
Frequency (Hz)
Figure 13. Power supply rejection ratio (PSRR) vs
bypass capacitor
10
100
1000
10000
100000
-80
-70
-60
-50
-40
-30
-20
-10
Cb=100µF
Cb=10µF
Cb=47µF
Cb=1µF
Vcc = 5, 3.3 & 2.6V
Rfeed = 22k
Rin = 22k, Cin = 1µF
Rg = 100Ω, RL = 8Ω
Tamb = 25°C
Frequency (Hz)
TS4871
Electrical characteristics curves
DS2547 - Rev 10
page 8/42



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