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A21SP16 データシート(PDF) 18 Page - STMicroelectronics

部品番号 A21SP16
部品情報  3 W filter-free class-D audio power amplifier
PDF  37 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A21SP16 データシート(HTML) 18 Page - STMicroelectronics

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Electrical characteristic curves
A21SP16
18/37
DocID026037 Rev 2
Figure 10. Efficiency vs. output power
Figure 11. Efficiency vs. output power
0.0
0.2
0.4
0.6
0.8
1.0
0
20
40
60
80
100
0
50
100
150
Vcc=5V
RL=8
Ω + ≥ 15μH
F=1kHz
THD+N
≤1%
Power
Dissipation
Efficiency
Output Power (W)
0.0
0.1
0.2
0.3
0.4
0.5
0
20
40
60
80
100
0
25
50
75
Vcc=3V
RL=8
Ω + ≥ 15μH
F=1kHz
THD+N
≤1%
Power
Dissipation
Efficiency
Output Power (W)
Figure 12. Output power vs. power supply
voltage
Figure 13. Output power vs. power supply
voltage
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
THD+N=10%
RL = 4
Ω + ≥ 15μH
F = 1kHz
BW < 30kHz
Tamb = 25
°C
THD+N=2%
Vcc (V)
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.5
1.0
1.5
2.0
THD+N=10%
RL = 8
Ω + ≥ 15μH
F = 1kHz
BW < 30kHz
Tamb = 25
°C
THD+N=1%
Vcc (V)
Figure 14. PSRR vs. frequency
Figure 15. PSRR vs. frequency
100
1000
10000
-80
-70
-60
-50
-40
-30
-20
-10
0
Vcc=3V
20k
20
Vcc=5V
Vripple = 200mVpp
Inputs = Grounded
G = 6dB, Cin = 4.7
μF
RL = 4
Ω + 15μH
Tamb = 25
°C
Frequency (Hz)
100
1000
10000
-80
-70
-60
-50
-40
-30
-20
-10
0
Vcc=3V
20k
20
Vcc=5V
Vripple = 200mVpp
Inputs = Grounded
G = 6dB, Cin = 4.7
μF
RL = 4
Ω + 30μH
Tamb = 25
°C
Frequency (Hz)



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