TS4995 Datasheet, PDF (16/26 Pages) STMicroelectronics – 1.2 W fully differential audio power amplifier with selectable standby and 6 dB fixed gain

Electrical characteristics
TS4995
Figure 50. Current consumption vs. standby Figure 51. Frequency response
voltage
4.0
3.5
3.0
2.5
Standby mode=0V
2.0
Standby mode=2.6V
1.5
1.0
Vcc = 2.6V
0.5
No load
Tamb = 25°C
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Standby Voltage (V)
8
7
6
5
4
3
2
1
0
20
Cin=4.7μF
Cin=330nF
Vcc = 5V
Gain = 6dB
ZL = 8Ω + 500pF
Tamb = 25°C
100
1000
10000 20k
Frequency (Hz)
Figure 52. Frequency response
Figure 53. Frequency response
8
7
6
5
4
3
2
1
0
20
Cin=4.7μF
Cin=330nF
Vcc = 3.3V
Gain = 6dB
ZL = 8Ω + 500pF
Tamb = 25°C
100
1000
10000 20k
Frequency (Hz)
8
7
6
5
4
3
2
1
0
20
Cin=4.7μF
Cin=330nF
Vcc = 2.6V
Gain = 6dB
ZL = 8Ω + 500pF
Tamb = 25°C
100
1000
10000 20k
Frequency (Hz)
Figure 54. SNR vs. power supply voltage with Figure 55. SNR vs. power supply voltage with
unweighted filter
A-weighted filter
120
F = 1kHz
118 _{G = 6dB}
116 ^{Cb = 1μF}
THD + N < 0.7%
114 _{Tamb = 25°C}
112
RL=16Ω
110
108
106
RL=8Ω
104
102
100
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Power Supply Voltage (V)
120
F = 1kHz
118 _{G = 6dB}
116 ^{Cb = 1μF}
THD + N < 0.7%
114 _{Tamb = 25°C}
112
110
RL=8Ω
108
106
RL=16Ω
104
102
100
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Power Supply Voltage (V)
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