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TS4909 Datasheet, PDF (7/32 Pages) STMicroelectronics – Dual mode low power 150mW stereo headphone amplifier with capacitor-less and single-ended outputs
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TS4909
Electrical characteristics
Table 6.
Symbol
Electrical characteristics at VCC = +2.6V
with GND = 0V, Tamb = 25°C (unless otherwise specified)
Parameter
Test conditions
Min. Typ. Max. Unit
ICC
Supply
current
No input signal, no load, single-ended
No input signal, no load, phantom ground
1.9
2.8
2.7
4
mA
ISTBY
Standby
current
No input signal, RL=32Ω
10 1000 nA
THD+N = 1% max, F = 1kHz, RL = 32Ω, single-ended
15 23
Pout
Output power
THD+N = 1% max, F = 1kHz, RL = 16Ω,
THD+N = 1% max, F = 1kHz, RL = 32Ω,
single-ended
phantom ground
22 38
15 23
mW
THD+N = 1% max, F = 1kHz, RL = 16Ω, phantom ground
22 39
THD+N
Total
harmonic
distortion +
noise
(Av=-1)
RL = 32Ω, Pout = 20mW, 20Hz ≤ F ≤ 20kHz, single-ended
RL = 16Ω, Pout = 30mW, 20Hz ≤ F ≤ 20kHz, single-ended
RL = 32Ω, Pout = 20mW, 20Hz ≤ F ≤ 20kHz, phantom ground
RL = 16Ω, Pout = 30mW, 20Hz ≤ F ≤ 20kHz, phantom ground
0.3
0.3
0.3
0.3
%
Inputs grounded (1), Av=-1, RL>=16Ω, Cb=1μF, F = 217Hz,
PSRR
Power supply Vripple = 200mVpp
rejection ratio Single-ended output referenced to phantom ground
dB
64 70
Single-ended output referenced to ground
59 65
Iout
Max output
current
THD +N ≤1%, RL = 16Ω connected between out and VCC/2
70
mA
VO
SNR
VOL: RL = 32Ω
Output swing
VOH: RL = 32Ω
VOL: RL = 16Ω
VOH: RL = 16Ω
Signal-to-
noise ratio
A weighted, Av=-1, RL = 32Ω, THD +N < 0.4%,
20Hz ≤ F ≤ 20kHz
Single-ended
Phantom ground
0.11 0.3
2.25 2.45
0.18 0.44
V
2.11 2.32
99
dB
100
Cross-
talk
Channel
separation
RL = 32Ω, Av=-1, phantom ground
F = 1kHz
F = 20Hz to 20kHz
RL = 32Ω, Av=-1, single-ended
F = 1kHz
F = 20Hz to 20kHz
-73
-68
dB
-110
-90
VOO
Output offset
voltage
Phantom ground configuration, floating inputs, Rfeed=22KΩ
5 20 mV
tWU
Wake-up Phantom ground configuration
time
Single-ended configuration
50
100
80
160
ms
1. Guaranteed by design and evaluation.
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