STMicroelectronics Pop-free 120 mW stereo headphone amplifier DEMOTS488S DEMOTS488S Data Sheet
Product codes
DEMOTS488S
Electrical characteristics
TS488-TS489
6/32
Doc ID 11971 Rev 5
Table 5.
Electrical characteristics at V
CC
= +3.3 V
with GND = 0 V, T
amb
= 25 °C (unless otherwise specified)
(1)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
I
CC
Supply current
No input signal, no load
1.8
2.5
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
34
mW
THD+N = 1% max, F = 1 kHz, R
L
= 32
Ω
30
35
THD+N = 0.1% max, F = 1 kHz, R
L
= 16
Ω
55
THD+N = 1% max, F = 1 kHz, R
L
= 16
Ω
47
57
THD+N
Total harmonic distortion
+ noise
+ noise
A
V
= -1, R
L
= 32
Ω, P
out
= 16 mW,
20 Hz
≤ F ≤ 20 kHz
0.3
%
A
V
= -1, R
L
= 16
Ω, P
out
= 35 mW,
20 Hz
≤ F ≤ 20 kHz
0.3
PSRR
Power supply rejection
ratio, inputs grounded
ratio, inputs grounded
(2)
A
V
= -1, R
L
≥ 16 Ω, C
b
=1 µF, F = 1 kHz
,
V
ripple
= 200 mVpp
63
69
dB
A
V
= -1, R
L
≥
16
Ω, C
b
=1 µF, F = 217 Hz
,
V
ripple
= 200 mVpp
61
67
V
O
Output swing
V
OL
: R
L
= 32
Ω
0.15
0.2
V
V
OH
: R
L
= 32
Ω
3.03
3.12
V
OL
: R
L
= 16
Ω
0.28
0.36
V
OH
: R
L
= 16
Ω
2.82
2.97
SNR
Signal-to-noise ratio
A-weighted, A
V
= -1, R
L
= 32
Ω,
THD+N < 0.4%, 20 Hz
≤F ≤ 20 kHz
102
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
0.6
V/
μs
V
IO
Input offset voltage
V
icm
=V
CC
/2
1
20
mV
t
wu
Wake-up time
100
ms
1.
All electrical values are guaranteed with correlation measurements at 2.5 V and 5 V.
2.
Guaranteed by design and evaluation.