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INA381

SBOS848B – DECEMBER 2017 – REVISED OCTOBER 2019

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Copyright © 2017–2019, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

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

5

Pin Configuration and Functions ......................... 3

6

Specifications......................................................... 4

6.1

Absolute Maximum Ratings ...................................... 4

6.2

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

6.3

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

6.4

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

6.5

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

6.6

Typical Characteristics .............................................. 6

7

Detailed Description ............................................ 13

7.1

Overview ................................................................. 13

7.2

Functional Block Diagram ....................................... 13

7.3

Feature Description................................................. 14

7.4

Device Functional Modes........................................ 17

8

Applications and Implementation ...................... 19

8.1

Application Information............................................ 19

8.2

Typical Applications ................................................ 25

9

Power Supply Recommendations ...................... 29

10

Layout................................................................... 30

10.1

Layout Guidelines ................................................. 30

10.2

Layout Example .................................................... 30

11

Device and Documentation Support ................. 31

11.1

Documentation Support ........................................ 31

11.2

Receiving Notification of Documentation Updates 31

11.3

Support Resources ............................................... 31

11.4

Trademarks ........................................................... 31

11.5

Electrostatic Discharge Caution ............................ 31

11.6

Glossary ................................................................ 31

12

Mechanical, Packaging, and Orderable

Information ........................................................... 31

4 Revision History

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

Changes from Revision A (April 2018) to Revision B

Page

•

Added DGS (VSSOP-8) package and associated content to data sheet ............................................................................. 1

•

Added specified temperature to offset voltage and gain error features bullets ...................................................................... 1

•

Changed response time features bullet at 500 ns to propagation delay at 400 ns................................................................ 1

•

Changed applications bullets to new items ............................................................................................................................ 1

•

Added plus-minus symbol to TYP and MAX values of comparator offset voltage ................................................................. 5

•

Changed Figure 54 to remove reset connection to supply................................................................................................... 30

Changes from Original (December 2017) to Revision A

Page

•

Released to production .......................................................................................................................................................... 1