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INA821 Arkusz danych(PDF) 41 Page - Texas Instruments

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Numer części INA821
Szczegółowy opis  INA851 Precision, Low-Noise, Fully Differential Output Instrumentation Amplifier With Attenuating Gain and Output Clamping
PDF  52 Pages
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

INA821 Arkusz danych(HTML) 41 Page - Texas Instruments

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9.4.2 Layout Example
GND
GND
IN–
RG
RG
4
IN+
1
2
3
G02+
OUT+
OUT–
9
G02–
12
11
10
PAD
R2
GND
VIN+
VIN–
R1
GND
RG
VS–
C2
VS+
C1
C4
C3
VCLAMP–
VCLAMP+
VOCM
INN
INP
Use ground pours for
shielding the input
signal pairs
Place bypass
capacitors as close to
IC as possible
RG
VIN–
VIN+
VS+
VS–
R2
R1
C2
C1
RG
INA851
RG
R3
R4
C7
ADC
C3
C4
Short OUTx to
G02x for output
stage G = 0.2
Connect feedback
capacitors between
OUTx and FDA_INx
(optional)
INP
INN
C7
R3
R4
OUT–
OUT+
VOCM
Consider utilizing
thermal vias for
heatsinking
Cutouts on ground planes
underneath input pins
(1, 4, 6, 15) can reduce
stray capacitance, for
better phase margin
C5
C6
C6
C5
GND
GND
Figure 9-14. Example Schematic and Associated PCB Layout
www.ti.com
INA851
SBOS999A – MARCH 2022 – REVISED OCTOBER 2022
Copyright © 2022 Texas Instruments Incorporated
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