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TS472 Datasheet(PDF) 4 Page - STMicroelectronics

Part # TS472
Description  Very Low Noise Microphone Preamplifier with 2V Biased Output and Active Low Standby Mode
PDF  20 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS472 Datasheet(HTML) 4 Page - STMicroelectronics

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Electrical Characteristics
TS472
4/20
3
Electrical Characteristics
Table 4.
VCC = 3V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
en
Equivalent Input Noise Voltage Density
REQ=100Ω at 1KHz
10
THD+N
Total Harmonic Distortion + Noise
20Hz
≤ F≤ 20kHz, Gain=20dB, Vin=50mV
RMS
0.1
%
VIN
Input Voltage, Gain=20dB
10
70
mVRMS
BW
Bandwidth @ -3dB
Bandwidth @ -1dB
pin A3, B3 floating
40
20
kHz
G
Overall Output Voltage Gain (Rgs variable)
Minimum Gain, Rgs infinite
Maximum Gain, Rgs=0
-3
39.5
-1.5
41
0
42.5
dB
ZIN
Input impedance referred to GND
80
100
120
k
Ω
RLOAD
Resistive load
10
k
Ω
CLOAD
Capacitive load
100
pF
ICC
Supply current, Gain=20dB
1.8
2.4
mA
ISTANDBY Standby current
1
µA
PSRR
Power Supply Rejection Ratio, Gain=20dB, F=217Hz,
Vripple=200mVpp, Inputs grounded
Differential Output
Single-Ended Outputs,
-70
-46
dB
Table 5.
Bias output: VCC = 3V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VOUT
No load condition
1.9
2
2.1
V
ROUT
Output resistance
80
100
120
Ω
IOUT
Output Bias Current
2
mA
PSRR
Power Supply Rejection Ratio, F=217Hz,
Vripple=200mVpp
70
80
dB
nV
Hz
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