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TS4995 Datasheet, PDF (5/26 Pages) STMicroelectronics – 1.2 W fully differential audio power amplifier with selectable standby and 6 dB fixed gain
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TS4995
3
Electrical characteristics
Electrical characteristics
Table 4.
Symbol
VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Parameter
Test conditions
Min. Typ. Max. Unit
ICC Supply current
ISTBY Standby current
Voo
Differential output offset
voltage
No input signal, no load
No input signal, VSTBY = VSM = GND, RL = 8Ω
No input signal, VSTBY = VSM = VCC, RL = 8Ω
No input signal, RL = 8Ω
4 7 mA
10 1000 nA
0.1 10 mV
VIC Input common mode voltage
0
4.5 V
Po Output power
THD = 1% Max, F= 1kHz, RL = 8Ω
0.8 1.2
W
THD
+
N
Total harmonic
noise
distortion
+
Po = 850mW rms, 20Hz ≤ F ≤ 20kHz, RL = 8Ω
0.5
%
PSRRIG
Power supply rejection ratio
with inputs grounded(1)
F = 217Hz, R = 8Ω, Cin = 4.7µF, Cb =1µF
Vripple = 200mVPP
CMRR
Common mode rejection ratio
F = 217Hz, RL = 8Ω,
Vic = 200mVPP
Cin = 4.7µF, Cb =1µF
SNR Signal-to-noise ratio
A-weighted filter
RL = 8Ω, THD +N < 0.7%, 20Hz ≤ F ≤ 20kHz
GBP Gain bandwidth product
RL = 8Ω
VN Output voltage noise
20Hz ≤ F ≤ 20kHz, RL = 8Ω
Unweighted
A-weighted
Unweighted, standby
A-weighted, standby
75(2) 90
60
100
2
11
7
3.5
1.5
dB
dB
dB
MHz
µVRMS
Zin Input impedance
15 20 25 kΩ
- Gain mismatch
5.5 6 6.5 dB
tWU Wake-up time(3)
Cb =1µF
15
ms
1. Dynamic measurements - 20*log(rms(Vout)/rms (Vripple)). Vripple is the super-imposed sinus signal relative to VCC.
2. Guaranteed by design and evaluation.
3. Transition time from standby mode to fully operational amplifier.
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