STMicroelectronics Pop-free 120 mW stereo headphone amplifier DEMOTS488S DEMOTS488S Ficha De Dados
Códigos do produto
DEMOTS488S
Electrical characteristics
TS488-TS489
12/32
Doc ID 11971 Rev 5
Figure 20.
Power dissipation vs. output power
per channel
per channel
Figure 21.
Power dissipation vs. output power
per channel
per channel
0
5
10
15
20
25
30
35
40
0
5
10
15
20
25
30
RL=32
Ω
RL=16
Ω
Vcc=2.5V, F=1kHz, THD+N<1%
Pow
er Dissi
pation (mW)
Output Power (mW)
0
10
20
30
40
50
60
70
0
5
10
15
20
25
30
35
40
RL=32
Ω
RL=16
Ω
Vcc=3.3V, F=1kHz, THD+N<1%
Pow
er Dissi
pation (mW)
Output Power (mW)
Figure 22.
Power dissipation vs. output power
per channel
per channel
Figure 23.
Power supply rejection ratio vs.
frequency
frequency
0
20
40
60
80
100
120
140
160
0
20
40
60
80
100
RL=32
Ω
RL=16
Ω
Vcc=5V, F=1kHz, THD+N<1%
Pow
er Dissi
pation (mW)
Output Power (mW)
100
1k
10k
-80
-70
-60
-50
-40
-30
-20
-10
0
Vcc=5V
Vcc=3.3V
20k
20
Vcc=2.5V
Inputs grounded, Av=-1,
RL
RL
=
16
Ω
, Cb=1
μ
F, T
AMB
=25°C
PSR
R (dB)
Frequency (Hz)
Figure 24.
Power supply rejection ratio vs.
frequency
frequency
Figure 25.
Power supply rejection ratio vs.
frequency
frequency
100
1k
10k
-80
-70
-60
-50
-40
-30
-20
-10
0
Av=-4
Av=-1
20k
20
Av=-2
Inputs grounded, Vcc=3.3V,
RL=16
RL=16
Ω
, Cb=1
μ
F, T
AMB
=25°C
PSR
R (dB)
Frequency (Hz)
100
1k
10k
-80
-70
-60
-50
-40
-30
-20
-10
0
Cb=1
μ
F
Cb=100nF
Cb=470nF
20k
20
Cb=220nF
Inputs grounded, Av=-1,
RL=16
RL=16
Ω
, Vcc=3.3V, T
AMB
=25°C
PSR
R (dB)
Frequency (Hz)