TS4972 Просмотр технического описания (PDF) - STMicroelectronics
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TS4972 Datasheet PDF : 30 Pages
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Electrical Characteristics
Figure 19: Power Dissipation vs Pout
0.6
Vcc=3.3V
F=1kHz
0.5 THD+N<1%
0.4
RL=4Ω
0.3
0.2
RL=8Ω
0.1
RL=16Ω
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Output Power (W)
Figure 20: Power Derating Curves
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
Heat sink surface = 125mm2
(See demoboard)
No Heat sink
25
50
75
100
125
150
Ambiant Temperature ( C)
Figure 21: THD + N vs Output Power
10
RL = 4Ω
Vcc = 5V
Gv = 2
Cb = Cin = 1µF
1
BW < 125kHz
Tamb = 25°C
20kHz
0.1
0.01
1E-3
20Hz
1kHz
0.01
0.1
1
Output Power (W)
TS4972
Figure 22: THD + N vs Output Power
10
RL = 4Ω, Vcc = 3.3V
Gv = 2
Cb = Cin = 1µF
BW < 125kHz
1 Tamb = 25°C
0.1
20kHz
0.01
1E-3
20Hz
1kHz
0.01
0.1
1
Output Power (W)
Figure 23: THD + N vs Output Power
10
RL = 4Ω, Vcc = 2.6V
Gv = 2
Cb = Cin = 1µF
BW < 125kHz
1 Tamb = 25°C
20kHz
0.1
0.01
1E-3
20Hz
1kHz
0.01
0.1
Output Power (W)
Figure 24: THD + N vs Output Power
10
RL = 4Ω, Vcc = 5V
Gv = 10
Cb = Cin = 1µF
BW < 125kHz, Tamb = 25°C
1
20kHz
0.1
0.01
1E-3
20Hz
1kHz
0.01
0.1
1
Output Power (W)
9/30
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