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INA821

SBOS893D – AUGUST 2018 – REVISED JUNE 2020

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Copyright © 2018–2020, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 1

4

Revision History..................................................... 2

5

Device Comparison Table..................................... 3

6

Pin Configuration and Functions ......................... 4

7

Specifications......................................................... 5

7.1

Absolute Maximum Ratings ...................................... 5

7.2

ESD Ratings ............................................................ 5

7.3

Recommended Operating Conditions ....................... 5

7.4

Thermal Information .................................................. 5

7.5

Electrical Characteristics........................................... 6

7.6

Typical Characteristics: Table of Graphs .................. 8

7.7

Typical Characteristics ............................................ 10

8

Detailed Description ............................................ 19

8.1

Overview ................................................................. 19

8.2

Functional Block Diagram ....................................... 19

8.3

Feature Description................................................. 20

8.4

Device Functional Modes........................................ 26

9

Application and Implementation ........................ 26

9.1

Application Information............................................ 26

9.2

Typical Application .................................................. 29

9.3

Other Application Examples.................................... 31

10

Power Supply Recommendations ..................... 32

11

Layout................................................................... 32

11.1

Layout Guidelines ................................................. 32

11.2

Layout Example .................................................... 33

12

Device and Documentation Support ................. 34

12.1

Device Support .................................................... 34

12.2

Documentation Support ........................................ 34

12.3

Receiving Notification of Documentation Updates 34

12.4

Support Resources ............................................... 34

12.5

Trademarks ........................................................... 34

12.6

Electrostatic Discharge Caution ............................ 34

12.7

Glossary ................................................................ 34

13

Mechanical, Packaging, and Orderable

Information ........................................................... 34

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision C (July 2019) to Revision D

Page

•

Added DRG (WSON) package and associated content to data sheet .................................................................................. 1

Changes from Revision B (May 2019) to Revision C

Page

•

Changed DGK (VSSOP) package from advanced information (preview) to production data (active) ................................... 1

•

Changed Figure 9, Typical Distribution of Input Offset Current, to show correct image ...................................................... 11

•

Changed Figure 27, Typical Distribution of Gain Error, G = 1, to show improved data ....................................................... 14

Changes from Revision A (December 2018) to Revision B

Page

•

Added 8-pin DGK (VSSOP) advanced information package and associated content to data sheet ..................................... 1

•

Changed Applications bullets ................................................................................................................................................. 1

Changes from Original (August 2018) to Revision A

Page

•

First release of production-data data sheet ........................................................................................................................... 1