STMicroelectronics Pop-free 120 mW stereo headphone amplifier DEMOTS488S DEMOTS488S 数据表
产品代码
DEMOTS488S
TS488-TS489
Electrical characteristics
Doc ID 11971 Rev 5
17/32
Figure 50.
Total harmonic distortion plus
noise vs. frequency
noise vs. frequency
Figure 51.
Total harmonic distortion plus
noise vs. frequency
noise vs. frequency
100
1k
10k
1E-3
0.01
0.1
1
Vcc=5V, Po=100mW
Vcc=3.3V, Po=40mW
20k
20
Vcc=2.5V, Po=20mW
R
L
=16
Ω,
A
V
=-4
BW=20Hz-120kHz
T
T
AMB
=25°C
T
H
D+
N (%
)
Frequency (Hz)
100
1k
10k
1E-3
0.01
0.1
1
Vcc=5V, Po=60mW
Vcc=3.3V, Po=25mW
20k
20
Vcc=2.5V, Po=12mW
R
L
=32
Ω,
A
V
=-4
BW=20Hz-120kHz
T
T
AMB
=25°C
T
H
D+
N (%
)
Frequency (Hz)
Figure 52.
Total harmonic distortion plus
noise vs. frequency
noise vs. frequency
Figure 53.
Output power vs. load resistance
100
1k
10k
1E-3
0.01
0.1
1
Vcc=5V, Po=1.6V
RMS
Vcc=3.3V, Vo=1V
RMS
20k
20
Vcc=2.5V, Vo=0.7V
RMS
R
L
=600
Ω,
A
V
=-4
BW=20Hz-120kHz
T
T
AMB
=25°C
T
H
D+
N (%
)
Frequency (Hz)
8
16
24
32
40
48
56
64
0
25
50
75
THD+N=10%
Vcc=2.5V, F=1kHz
T
T
AMB
=25°C
BW=20Hz-120kHz
Output
P
ower
(mW)
Load Resistance (
Ω)
THD+N=1%
Figure 54.
Output power vs. load resistance
Figure 55.
Output power vs. load resistance
8
16
24
32
40
48
56
64
0
25
50
75
100
125
THD+N=10%
Vcc=3.3V, F=1kHz
T
T
AMB
=25°C
BW=20Hz-120kHz
Output
P
ower
(mW)
Load Resistance (
Ω)
THD+N=1%
8
16
24
32
40
48
56
64
0
50
100
150
200
250
THD+N=10%
Vcc=5V, F=1kHz
T
T
AMB
=25°C
BW=20Hz-120kHz
Output
P
ower
(mW)
Load Resistance (
Ω)
THD+N=1%