TS4984 Datasheet, PDF (11/29 Pages) STMicroelectronics – 2 x 1W Stereo audio power amplifier with active low standby mode

Electrical characteristics
Figure 26: Output power vs. power supply
voltage
1.0
0.9 ^{RL = 16Ω}
F = 1kHz
0.8 BW < 125kHz
0.7 ^{Tamb = 25°C}
0.6
0.5
0.4
0.3
0.2
0.1
0.0
2.5
3.0
THD+N=10%
THD+N=1%
3.5
4.0
4.5
5.0
5.5
Vcc (V)
Figure 27: Output power vs. power supply
voltage
0.60
0.55
0.50
0.45
0.40
RL = 32Ω
F = 1kHz
BW < 125kHz
Tamb = 25°C
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
2.5 3.0
THD+N=10%
THD+N=1%
3.5 4.0 4.5 5.0 5.5
Vcc (V)
Figure 28: Output power vs. load resistor
1.75
Vcc = 5V
1.50
F = 1kHz
1.25
THD+N=10%
BW < 125kHz
Tamb = 25°C
1.00
0.75
0.50
0.25 ^THD+N=1%
0.00
4
8
12
16
20
24
28
32
Load Resistance (W)
TS4984
Figure 29: Output power vs. load resistor
0.7
Vcc = 3.3V
0.6
F = 1kHz
THD+N=10%
BW < 125kHz
0.5
Tamb = 25°C
0.4
0.3
0.2
0.1 ^THD+N=1%
0.0
4
8
12
16
20
24
28
32
Load resistance
Figure 30: Output power vs. load resistor
0.40
Vcc = 2.6V
0.35
F = 1kHz
0.30
THD+N=10%
BW < 125kHz
Tamb = 25°C
0.25
0.20
0.15
0.10
THD+N=1%
0.05
0.00
4
8
12
16
20
24
28
32
Load resistance
Figure 31: Power dissipation vs. output power
Vcc=5V
2.4 F=1kHz
THD+N<1%
2.0
1.6
RL=4Ω
1.2
RL=8Ω
0.8
0.4
RL=16Ω
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Output Power (W)
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