Table of Contents

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

2 Applications..................................................................... 1

3 Description.......................................................................1

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

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

6 Specifications.................................................................. 5

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

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

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

6.4 Thermal Information: INA126......................................6

6.5 Thermal Information: INA2126....................................6

6.6 Electrical Characteristics.............................................7

6.7 Typical Characteristics................................................ 9

7 Detailed Description......................................................12

7.1 Overview................................................................... 12

7.2 Functional Block Diagram......................................... 12

7.3 Feature Description...................................................12

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

8 Application and Implementation.................................. 13

8.1 Application Information............................................. 13

8.2 Typical Application.................................................... 13

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

9.1 Low-Voltage Operation............................................. 17

10 Layout...........................................................................18

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

10.2 Layout Example...................................................... 19

11 Device and Documentation Support..........................20

11.1 Device Support........................................................20

11.2 Receiving Notification of Documentation Updates.. 20

11.3 Support Resources................................................. 20

11.4 Trademarks............................................................. 20

11.5 Electrostatic Discharge Caution.............................. 20

11.6 Glossary.................................................................. 20

12 Mechanical, Packaging, and Orderable

Information.................................................................... 20

4 Revision History

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

Changes from Revision B (December 2015) to Revision C (December 2021)

Page

• Updated the numbering format for tables, figures, and cross-references throughout the document..................1

• Added dual supply specification to Absolute Maximum Ratings ........................................................................5

• Deleted redundant operating temperature and input common mode voltage specifications in Recommended

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

• Added dual supply and specified temperature specifications in Recommended Operating Conditions ............ 5

• Added proper signs for PSRR and input bias current specifications in Electrical Characteristics ..................... 7

• Deleted VO = 0 V test condition of common-mode voltage specification in Electrical Characteristics ...............7

• Changed common-mode voltage specification from ±11.25 V minimum, to –11.25 V minimum and 11.25 V

maximum, in Electrical Characteristics .............................................................................................................. 7

• Changed minimum CMRR specification for INA126U/E, INA2126E from 83 dB to 80 dB in Electrical

Characteristics ................................................................................................................................................... 7

• Added typical input bias current specification of ±10 nA for INA126PA/UA/EA and INA2126PA/UA/EA in

Electrical Characteristics ................................................................................................................................... 7

• Changed current noise specifications in Electrical Characteristics from 60 fA/√Hz to 160 fA/√Hz for f = 1 kHz,

and from 2 pApp to 7.3 pApp for f = 0.1 Hz to 10 Hz..........................................................................................7

• Changed test condition for short-circuit current specification in Electrical Characteristics from "Short circuit to

ground" to "Continuous to VS / 2" for clarity........................................................................................................7

• Changed short-circuit current specification in Electrical Characteristics from +10/-5 mA to ±5 mA................... 7

• Deleted redundant voltage range, operating temperature range, and specification temperature range

specifications from Electrical Characteristics .....................................................................................................7

• Changed Figures 6-7, 6-10, 6-13, 6-14, 6-15, 6-16, 6-17 ..................................................................................9

• Added Figure 6-11.............................................................................................................................................. 9

Changes from Revision A (August 2005) to Revision B (December 2015)

Page

• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and

Implementation section, Power Supply Recommendations section, Layout section, Device and

Documentation Support section, and Mechanical, Packaging, and Orderable Information section................... 1

INA126, INA2126

SBOS062C – SEPTEMBER 2000 – REVISED JANUARY 2022

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