STMicroelectronics Pop-free 120 mW stereo headphone amplifier DEMOTS488S DEMOTS488S データシート
製品コード
DEMOTS488S
TS488-TS489
Electrical characteristics
Doc ID 11971 Rev 5
5/32
3 Electrical
characteristics
Table 4.
Electrical characteristics at V
CC
= +5 V
with GND = 0 V, T
amb
= 25 °C (unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
I
CC
Supply current
No input signal, no load
2
2.7
mA
I
STBY
Standby current
No input signal, V
STBY
= GND for TS488,
R
L
= 32
Ω
10
1000
nA
No input signal, V
STBY
= V
CC
for TS489,
R
L
= 32
Ω
10
1000
P
out
Output power
THD+N = 0.1% max, F = 1 kHz, R
L
= 32
Ω
75
mW
THD+N = 1% max, F = 1 kHz, R
L
= 32
Ω
70
80
THD+N = 0.1% max, F = 1 kHz, R
L
= 16
Ω
120
THD+N = 1% max, F = 1 kHz, R
L
= 16
Ω
100
130
THD+N
Total harmonic distortion
+ noise
+ noise
A
V
=-1, R
L
= 32
Ω, P
out
= 60 mW,
20 Hz
≤ F ≤ 20 kHz
0.3
%
A
V
=-1, R
L
= 16
Ω, P
out
= 90 mW,
20 Hz
≤ F ≤ 20 kHz
0.3
PSRR
Power supply rejection
ratio, inputs grounded
ratio, inputs grounded
(1)
A
V
=-1, R
L
≥ 16 Ω, C
b
=1 µF, F = 1 kHz
,
V
ripple
= 200 mVpp
64
70
dB
A
V
=-1, R
L
≥
16
Ω, C
b
=1 µF, F = 217 Hz
,
V
ripple
= 200 mVpp
62
68
V
O
Output swing
V
OL
: R
L
= 32
Ω
0.23
0.31
V
V
OH
: R
L
= 32
Ω
4.53
4.72
V
OL
: R
L
= 16
Ω
0.44
0.57
V
OH
: R
L
= 16
Ω
4.18
4.48
SNR
Signal-to-noise ratio
A-weighted, A
V
=-1, R
L
= 32
Ω,
THD+N < 0.4%, 20 Hz
≤ F ≤ 20 kHz
105
dB
Crosstalk Channel separation
R
L
= 32
Ω, A
V
= -1
F = 1 kHz
F = 20 Hz to 20 kHz
F = 20 Hz to 20 kHz
-102
-84
dB
C
i
Input capacitance
1
pF
GBP
Gain bandwidth product
R
L
= 32
Ω
1.1
MHz
SR
Slew rate, unity gain
inverting
inverting
R
L
= 16
Ω
0.65
V/
μs
V
IO
Input offset voltage
V
icm
=V
CC
/2
1
20
mV
t
wu
Wake-up time
100
ms
1.
Guaranteed by design and evaluation.