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INA270, INA271

SBOS381E – FEBRUARY 2007 – REVISED JANUARY 2018

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Product Folder Links: INA270 INA271

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Copyright © 2007–2018, 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 ......................... 3

7

Specifications......................................................... 3

7.1

Absolute Maximum Ratings ...................................... 3

7.2

ESD Ratings.............................................................. 4

7.3

Recommended Operating Conditions ....................... 4

7.4

Thermal Information .................................................. 4

7.5

Electrical Characteristics........................................... 5

7.6

Typical Characteristics .............................................. 7

8

Detailed Description ............................................ 10

8.1

Overview ................................................................. 10

8.2

Functional Block Diagram ....................................... 10

8.3

Feature Description................................................. 11

8.4

Device Functional Modes........................................ 12

9

Application and Implementation ........................ 15

9.1

Application Information............................................ 15

9.2

Typical Application ................................................. 15

10

Power Supply Recommendations ..................... 17

10.1

Shutdown .............................................................. 17

11

Layout................................................................... 18

11.1

Layout Guidelines ................................................. 18

11.2

Layout Example .................................................... 18

12

Device and Documentation Support ................. 19

12.1

Documentation Support ........................................ 19

12.2

Related Links ........................................................ 19

12.3

Community Resources.......................................... 19

12.4

Trademarks ........................................................... 19

12.5

Electrostatic Discharge Caution ............................ 19

12.6

Glossary ................................................................ 19

13

Mechanical, Packaging, and Orderable

Information ........................................................... 19

4 Revision History

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

Changes from Revision D (November 2014) to Revision E

Page

•

Added title to page 1 figure ................................................................................................................................................... 1

•

Updated ESD Ratings table to current standards ................................................................................................................. 4

•

Changed Figure 16: changed op amp input to BUF IN pin from negative to positive ......................................................... 12

•

Added Community Resources section ................................................................................................................................. 19

Changes from Revision C (May 2010) to Revision D

Page

•

Changed format to meet latest data sheet standards ............................................................................................................ 1

•

Added Handling Rating, Pin Descriptions, and Recommended Operating Conditions tables and Feature

Description, Device Functional Modes, Application and Implementation, Power Supply

Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable

Information sections................................................................................................................................................................ 1

•

Changed Accuracy and Quiescent Current Features bullets: changed from max specifications and values to typical......... 1

•

Changed wording in Two Gain Options Available Features bullet ........................................................................................ 1

•

Changed Description section for clarification ......................................................................................................................... 1

•

Added Device Information table ............................................................................................................................................. 1

•

Deleted Ordering Information table ........................................................................................................................................ 3

•

Changed Input, Full-Scale Input Voltage parameter conditions in Electrical Characteristics table........................................ 5

•

Changed title of First- or Second-Order Filtering section ..................................................................................................... 12

•

Changed title of Power Supply Recommendations section.................................................................................................. 17

Changes from Revision B (July 2008) to Revision C

Page

•

Corrected Figure 17 y-axis ................................................................................................................................................... 14

•

Corrected Figure 18 y-axis ................................................................................................................................................... 14