TS488 Datasheet, PDF (12/32 Pages) STMicroelectronics – Pop-free 120mW stereo headphone amplifier

Electrical characteristics
TS488-TS489
Figure 20. Power dissipation vs. output power Figure 21. Power dissipation vs. output power
per channel
per channel
30
Vcc=2.5V, F=1kHz, THD+N<1%
25
RL=16Ω
20
15
RL=32Ω
10
5
0
0
5
10 15 20 25 30 35 40
Output Power (mW)
40
Vcc=3.3V, F=1kHz, THD+N<1%
35
30
25
RL=16Ω
20
RL=32Ω
15
10
5
0
0
10
20
30
40
50
60
70
Output Power (mW)
Figure 22. Power dissipation vs. output power Figure 23. Power supply rejection ratio vs.
per channel
frequency
100
Vcc=5V, F=1kHz, THD+N<1%
80
RL=16Ω
0
Inputs grounded, Av=-1,
-10 RL=16Ω, Cb=1μF, T =25°C
AMB
-20
-30
60
Vcc=2.5V
RL=32Ω
-40
Vcc=3.3V
40
-50
Vcc=5V
-60
20
-70
0
0
20 40 60 80 100 120 140 160
Output Power (mW)
-80
20
100
1k
Frequency (Hz)
10k 20k
Figure 24. Power supply rejection ratio vs.
frequency
Figure 25. Power supply rejection ratio vs.
frequency
0
Inputs grounded, Vcc=3.3V,
-10 RL=16Ω, Cb=1μF, T =25°C
AMB
-20
Av=-4
-30
Av=-2
-40
Av=-1
-50
0
Inputs grounded, Av=-1,
-10 _{RL=16Ω , Vcc=3.3V, T =25°C}
AMB
-20
Cb=1μF
-30
Cb=470nF
-40
Cb=220nF
-50
Cb=100nF
-60
-60
-70
-70
-80
20
100
1k
Frequency (Hz)
10k 20k
-80
20
100
1k
Frequency (Hz)
10k 20k
12/32