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OPA211AI Scheda tecnica(PDF) 16 Page - Texas Instruments

Il numero della parte OPA211AI
Spiegazioni elettronici  1.1nV/?숰z Noise, Low Power, Precision Operational Amplifier in Small DFN-8 Package
PDF  17 Pages
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

OPA211AI Scheda tecnica(HTML) 16 Page - Texas Instruments

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R
1
R
2
E
O
R
1
R
2
E
O
R
S
V
S
R
S
V
S
NoiseinNoninvertingGainConfiguration
NoiseinInvertingGainConfiguration
Noiseattheoutput:
E
=
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2
Wheree = Ö
S
S
4kTR ´
=thermalnoiseofR
S
2
1+
R
2
R
1
e
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n
1
2
n
2
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R
2
R
1
e = Ö
1
1
4kTR ´
=thermalnoiseofR
1
2
1+
R
2
R
1
e = Ö
2
2
2
4kTR =thermalnoiseofR
Noiseattheoutput:
E
=
O
2
Wheree = 4kTR
Ö
S
S
´
=thermalnoiseofR
S
2
1+
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S
e = 4kTR
Ö
1
1
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=thermalnoiseofR
1
e = 4kTR
Ö
2
2
2
=thermalnoiseofR
FortheOPA211seriesopampsat1kHz,e =1.1nV/ Hzandi =1.7pA/ Hz.
Ö
Ö
n
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2
OPA211
R
1
SignalGain=1+
DistortionGain=1+
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RMS
Generator
Output
Analyzer
Input
AudioPrecision
SystemTwo
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withPCController
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600W
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SIG.
GAIN
DIST.
GAIN
R
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2
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100W
1kW
1kW
10W
11W
1
11
101
101
R
2
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1
R
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3
NOTE:(1)MeasurementBW=80kHz.
OPA211
OPA2211
SBOS377D – OCTOBER 2006 – REVISED FEBRUARY 2008
Figure 41. Noise Calculation in Gain Configurations
Figure 42. Distortion Test Circuit
16
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Copyright © 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): OPA211 OPA2211



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