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TS4909 Datasheet(PDF) 7 Page - STMicroelectronics

Part # TS4909
Description  Dual mode low power 150 mW stereo headphone amplifier with capacitor-less and single-ended outputs
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4909 Datasheet(HTML) 7 Page - STMicroelectronics

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TS4909
Electrical characteristics
Doc ID 11972 Rev 9
7/35
3
Electrical characteristics
Table 4.
Electrical characteristics at VCC = +5 V with GND = 0 V and Tamb = 25°C
(unless otherwise specified)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
I
CC
Supply current
No input signal, no load, single-ended
No input signal, no load, phantom ground
2.1
3.1
3.2
4.8
mA
I
STBY
Standby
current
No input signal, R
L
= 32
Ω
10
1000
nA
P
out
Output power
THD+N = 1% max, F = 1kHz, R
L
= 32
Ω, single-ended
THD+N = 1% max, F = 1kHz, R
L
= 16
Ω, single-ended
THD+N = 1% max, F = 1kHz, R
L
= 32
Ω, phantom ground
THD+N = 1% max, F = 1kHz, R
L
= 16
Ω, phantom ground
60
95
60
95
88
158
85
150
mW
THD+N
Total
harmonic
distortion +
noise
(A
v
=-1)
R
L
= 32
Ω, P
out
= 60mW, 20Hz
≤ F ≤ 20kHz, single-ended
R
L
= 16
Ω, P
out
= 90mW, 20Hz
≤ F ≤ 20kHz, single-ended
R
L
= 32
Ω, P
out
= 60mW, 20Hz
≤ F ≤ 20kHz, phantom
ground
R
L
= 16
Ω, P
out
= 90mW, 20Hz
≤ F ≤ 20kHz, phantom ground
0.3
0.3
0.3
0.3
%
PSRR
Power supply
rejection ratio
Inputs grounded
(1)
, A
v
=-1, R
L
>=16
Ω, C
b
=1
μF, F = 217Hz,
V
ripple
= 200mVpp
Single-ended output referenced to phantom ground
Single-ended output referenced to ground
66
61
72
67
dB
I
out
Max output
current
THD +N
≤ 1%, R
L
= 16
Ω connected between out and V
CC
/2
140
mA
V
O
Output swing
V
OL
: R
L
= 32
Ω
V
OH
: R
L
= 32
Ω
V
OL
: R
L
= 16
Ω
V
OH
: R
L
= 16
Ω
4.39
4.17
0.14
4.75
0.25
4.55
0.47
0.69
V
SNR
Signal-to-
noise ratio
A-weighted, A
v
=-1, R
L
= 32
Ω, THD +N < 0.4%,
20Hz
≤ F ≤ 20kHz
Single-ended
Phantom ground
104
105
dB
Cross-
talk
Channel
separation
R
L
= 32
Ω, A
v
=-1, phantom ground
F = 1kHz
F = 20Hz to 20kHz
R
L
= 32
Ω, A
v
=-1, single-ended
F = 1kHz
F = 20Hz to 20kHz
-73
-68
-110
-90
dB
V
OO
Output offset
voltage
Phantom ground configuration, floating inputs, R
feed
=22K
Ω
520
mV
t
WU
Wake-up time
Phantom ground configuration
Single-ended configuration
50
100
80
160
ms
1.
Guaranteed by design and evaluation.



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