TS4962M_07 Datasheet, PDF (18/41 Pages) STMicroelectronics – 3W filter-free class D audio power amplifier

Electrical characteristic curves
TS4962M
Figure 10. Efficiency vs. output power
100
150
80
Efficiency
60
100
40
Power
Dissipation
50
Vcc=5V
20
RL=8Ω + ≥ 15μH
F=1kHz
THD+N≤1%
0
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Output Power (W)
Figure 11. Efficiency vs. output power
100
75
80
Efficiency
50
60
40
20
0
0.0
Power
Dissipation
25
Vcc=3V
RL=8Ω + ≥ 15μH
F=1kHz
THD+N≤1%
0
0.1
0.2
0.3
0.4
0.5
Output Power (W)
Figure 12. Output power vs. power supply
voltage
Figure 13. Output power vs. power supply
voltage
3.5
RL = 4Ω + ≥ 15μH
3.0 ^{F = 1kHz}
BW < 30kHz
Tamb = 25°C
2.5
THD+N=10%
2.0
1.5
THD+N=1%
1.0
0.5
0.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
2.0
RL = 8Ω + ≥ 15μH
F = 1kHz
BW < 30kHz
1.5 _{Tamb = 25°C}
THD+N=10%
1.0
0.5
THD+N=1%
0.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
Figure 14. PSRR vs. frequency
0
Vripple = 200mVpp
-10 _{Inputs = Grounded}
G = 6dB, Cin = 4.7μF
-20 _{RL = 4Ω + 15μH}
ΔR/R≤0.1%
-30 _{Tamb = 25°C}
-40
Vcc=5V, 3.6V, 2.5V
-50
-60
-70
-80
20
100
1000
Frequency (Hz)
Figure 15. PSRR vs. frequency
10000 20k
0
Vripple = 200mVpp
-10 _{Inputs = Grounded}
G = 6dB, Cin = 4.7μF
-20 _{RL = 4Ω + 30μH}
ΔR/R≤0.1%
-30 _{Tamb = 25°C}
-40
Vcc=5V, 3.6V, 2.5V
-50
-60
-70
-80
20
100
1000
Frequency (Hz)
10000 20k
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