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: OPA191 ................................... 6

6.5 Thermal Information: OPA2191 ................................. 6

6.6 Thermal Information: OPA4191 ................................. 6

6.7 Electrical Characteristics: VS = ±4 V to ±18 V

(VS = 8 V to 36 V) .........................................................7

6.8 Electrical Characteristics: VS = ±2.25 V to ±4 V

(VS = 4.5 V to 8 V) ........................................................9

6.9 Typical Characteristics.............................................. 11

7 Parameter Measurement Information.......................... 20

7.1 Input Offset Voltage Drift...........................................20

8 Detailed Description......................................................22

8.1 Overview................................................................... 22

8.2 Functional Block Diagram......................................... 22

8.3 Feature Description...................................................23

8.4 Device Functional Modes..........................................30

9 Application and Implementation.................................. 31

9.1 Application Information............................................. 31

9.2 Typical Applications.................................................. 31

10 Power Supply Recommendations..............................35

11 Layout........................................................................... 35

11.1 Layout Guidelines................................................... 35

11.2 Layout Example...................................................... 36

12 Device and Documentation Support..........................37

12.1 Device Support....................................................... 37

12.2 Documentation Support.......................................... 37

12.3 Receiving Notification of Documentation Updates..37

12.4 Support Resources................................................. 37

12.5 Trademarks.............................................................38

12.6 Electrostatic Discharge Caution..............................38

12.7 Glossary..................................................................38

13 Mechanical, Packaging, and Orderable

Information.................................................................... 38

4 Revision History

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

Changes from Revision C (October 2019) to Revision D (August 2021)

Page

• Changed OPA4191 PW (TSSOP-14) package from preview to production data (active).................................. 1

Changes from Revision B (July 2019) to Revision C (October 2019)

Page

• Changed OPA4191 RUM package from preview to production data (active).....................................................1

Changes from Revision A (April 2016) to Revision B (July 2019)

Page

• Added advanced information (preview) 16-pin RUM (WQFN) package and associated content to data sheet 1

• Changed Figure 32 condition from G = –1 to G = 1..........................................................................................11

• Changed Figure 33 condition from G = 1 to G = –1 .........................................................................................11

Changes from Revision * (December 2015) to Revision A (April 2016)

Page

• Changed DBV and DGK packages from product preview to production data.................................................... 1

• Changed Figure 23, 0.1-Hz to 10-Hz Noise......................................................................................................11

• Added text regarding capacitive load drive to the Capacitive Load and Stability section................................. 26

• Added Figure 56 .............................................................................................................................................. 26

OPA191, OPA2191, OPA4191

SBOS701D – DECEMBER 2015 – REVISED AUGUST 2021

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