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TS472 数据表(PDF) 10 Page - STMicroelectronics

部件名 TS472
功能描述  Very low noise microphone preamplifier with 2.0 V bias output and active low standby mode
PDF  25 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS472 数据表(HTML) 10 Page - STMicroelectronics

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Electrical characteristics
TS472
10/25
Doc ID 11015 Rev 6
Figure 14.
Differential output PSRR vs.
frequency
Figure 15.
Differential output PSRR vs.
frequency
100
1k
10k
-100
-80
-60
-40
-20
0
V
RIPPLE
=200mV
PP
, Inputs grounded
V
CC
=3V, Minimum Gain, Cin=1
μF, T
AMB
=25
°C
Cb=1
μF
No Cb
Cb=100nF
Frequency (Hz)
50
20k
100
1k
10k
-100
-80
-60
-40
-20
0
V
RIPPLE
=200mV
PP
, Inputs grounded
V
CC
=3V, Gain=20dB, Cin=1
μF, T
AMB
=25
°C
Cb=1
μF
No Cb
Cb=100nF
Frequency (Hz)
50
20k
Figure 16.
Single-ended output PSRR vs.
frequency
Figure 17.
Equivalent input noise voltage
density
100
1000
10000
-80
-70
-60
-50
-40
-30
-20
-10
0
Vcc=5V
Vcc=2.2V
Vcc=3V
Vripple=200mVpp
Inputs grounded
Cb=1
μF
Cin=100nF
Tamb=25
°C
Frequency (Hz)
50
20k
10
100
1k
10k
100k
1
10
100
1000
Cin=100nF
R
EQ
=100
Ω
T
AMB
=25
°C
Frequency (Hz)
Figure 18.
Δgain vs. power supply voltage
Figure 19.
Δgain vs. ambient temperature
345
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
Maximum Gain
Gain=20dB
F=1kHz
Vin=5mV
Tamb=25°C
Minimum Gain
Power Supply Voltage (V)
2.2
5.5
-40
-20
0
20
406080
-1.00
-0.75
-0.50
-0.25
0.00
0.25
0.50
Maximum Gain
F=1kHz
V
IN
=5mV
Gain=20dB
Minimum Gain
Ambient Temperature (°C)



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