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TS4890 数据表(PDF) 10 Page - STMicroelectronics

部件名 TS4890
功能描述  Rail-to-rail output 1 W audio power amplifier with standby mode active low
PDF  46 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS4890 数据表(HTML) 10 Page - STMicroelectronics

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Electrical characteristics
TS4890
10/46
DocID8396 Rev 7
3
Electrical characteristics
VCC = +5 V, GND = 0 V, Tamb = 25 °C (unless otherwise specified)
Table 5. Electrical characteristics
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply current
no input signal, no load
68
mA
ISTANDBY
Standby current (1), no input signal,
Vstdby = GND, RL = 8 Ω
1.
Standby mode is active when Vstdby is tied to GND.
10
1000
nA
Voo
Output offset voltage
no input signal, RL = 8 Ω
520
mV
Po
Output power
THD = 1% max., f = 1 kHz, RL = 8 Ω
1W
THD + N
Total harmonic distortion + noise
Po = 250 mW RMS, Gv = 2,
20 Hz < f < 20 kHz, RL = 8 Ω
0.15
%
PSRR
Power supply rejection ratio (2)
f = 217 Hz, RL = 8 Ω, RFeed = 22 kΩ,
Vripple = 200 mV RMS
2.
Dynamic measurements - 20*log(RMS(Vout)/RMS(Vripple)). Vripple is the superimposed sinus signal to VCC
@ f = 217 Hz.
77
dB
ɸ
M
Phase margin at unity gain
RL = 8 Ω, CL = 500 pF
70
Degrees
GM
Gain margin
RL = 8 Ω, CL = 500 pF
20
dB
GBP
Gain bandwidth product
RL = 8 Ω
2MHz
Table 6. Electrical characteristics (VCC= +3.3 V, GND= 0 V, Tamb = 25 °C, unless
otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply current
no input signal, no load
5.5
8
mA
ISTANDBY
Standby current (1), no input signal,
Vstdby = GND, RL = 8 Ω
10
1000
nA
Voo
Output offset voltage
no input signal, RL = 8 Ω
520
mV
Po
Output power
THD = 1% max., f = 1 kHz, RL = 8 Ω
450
mW



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