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TS4990 数据表(PDF) 5 Page - STMicroelectronics

部件名 TS4990
功能描述  1.2 W audio power amplifier with active low standby mode
PDF  32 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS4990 数据表(HTML) 5 Page - STMicroelectronics

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TS4990
Electrical characteristics
5/32
3
Electrical characteristics
Table 4.
Electrical characteristics when VCC = +5 V, GND = 0 V, Tamb =25°C
(unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply current
No input signal, no load
3.7
6
mA
ISTBY
Standby current (1)
No input signal, VSTBY = GND, RL = 8Ω
1.
Standby mode is active when VSTBY is tied to GND.
10
1000
nA
Voo
Output offset voltage
No input signal, RL = 8Ω
110
mV
Pout
Output power
THD = 1% max, F = 1kHz, RL = 8Ω
0.9
1.2
W
THD + N
Total harmonic distortion + noise
Pout = 1Wrms, AV = 2, 20Hz ≤ F ≤ 20kHz, RL = 8Ω
0.2
%
PSRR
Power supply rejection ratio(2)
RL = 8Ω, AV = 2, Vripple = 200mVpp, input grounded
F = 217Hz
F = 1kHz
2.
All PSRR data limits are guaranteed by production sampling tests.
Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon
VCC.
55
55
62
64
dB
tWU
Wake-up time (Cb = 1µF)
90
130
ms
tSTBY
Standby time (Cb = 1µF)
10
µs
VSTBYH
Standby voltage level high
1.3
V
VSTBYL
Standby voltage level low
0.4
V
ΦM
Phase margin at unity gain
RL = 8Ω, CL = 500pF
65
Degrees
GM
Gain margin
RL = 8Ω, CL = 500pF
15
dB
GBP
Gain bandwidth product
RL = 8Ω
1.5
MHz
ROUT-GND
Resistor output to GND (VSTBY ≤VSTBYL)
Vout1
Vout2
3
43
k
Ω



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