TS489 STMicroelectronics, TS489 Datasheet - Page 12

• Manufacturer Part Number: TS489
• Description: Pop-free 120mW stereo headphone amplifier
• Manufacturer: STMicroelectronics

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