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INA849 Fiches technique(PDF) 29 Page - Texas Instruments

No de pièce INA849
Description  PGA854 Low-Noise, Wide-Bandwidth, Decade Gain, Precision Programmable Gain Instrumentation Amplifier
PDF  39 Pages
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Fabricant  TI2 [Texas Instruments]
Site Internet  https://www.ti.com
Logo TI2 - Texas Instruments

INA849 Fiches technique(HTML) 29 Page - Texas Instruments

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8.4.2 Layout Example
GND
GND
GND
IN–
4
IN+
1
2
3
FDA_IN+
OUT–
OUT+
9
FDA_IN–
12
11
10
PAD
R2
GND
IN+
R1
GND
C4
C2
C7
C6
VOCM
ADC_INP
ADC_INN
Use ground pours for
shielding the input
signal pairs
Place bypass
capacitors as close to
IC as possible
R3
R4
C10
Consider using
thermal vias for
heatsinking
Cutouts on ground
planes underneath
input pins can reduce
stray capacitance, for
better phase margin
C8
C9
GND
VIN+
VIN
R2
R1
C2
C5
PGA854
ADC
C6
C7
INP
INN
C10
R3
R4
OUT+
OUT
VCM
C9
C8
Connect feedback
capacitors between
OUT and FDA_IN+
(optional)
A<2:0>
DGND
IN-
A2
A0
C1
GND
LVSS
VS
C3
C5
VS+
LVDD
Optional noise filtering
capacitors
C4
C1
C3
VS+
VS
VLVDD
VLVSS
Figure 8-10. Example Schematic and Associated PCB Layout
www.ti.com
PGA854
SBOSAN2A – AUGUST 2025 – REVISED DECEMBER 2025
Copyright © 2025 Texas Instruments Incorporated
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Product Folder Links: PGA854



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