SBOS969F October   2019  – January 2022 OPA2991 , OPA4991 , OPA991

PRODMIX  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information for Single Channel
    5. 6.5 Thermal Information for Dual Channel
    6. 6.6 Thermal Information for Quad Channel
    7. 6.7 Electrical Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Input Protection Circuitry
      2. 7.3.2  EMI Rejection
      3. 7.3.3  Thermal Protection
      4.      22
      5. 7.3.4  Capacitive Load and Stability
      6. 7.3.5  Common-Mode Voltage Range
      7. 7.3.6  Phase Reversal Protection
      8. 7.3.7  Electrical Overstress
      9. 7.3.8  Overload Recovery
      10. 7.3.9  Typical Specifications and Distributions
      11. 7.3.10 Packages With an Exposed Thermal Pad
      12. 7.3.11 Shutdown
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Low-Side Current Measurement
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 TINA-TI (Free Software Download)
        2. 11.1.1.2 TI Precision Designs
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

DRL package is preview only.
Figure 5-1 OPA991 DBV, T DCK, and DRL Package(A)
5-Pin SOT-23, SC70, and SOT-553
(Top View)
Figure 5-2 OPA991 DCK Package
5-Pin SC70
(Top View)
Table 5-1 Pin Functions: OPA991
PIN I/O DESCRIPTION
NAME DBV, DRL DCK
IN+ 3 1 I Noninverting input
IN– 4 3 I Inverting input
OUT 1 4 O Output
V+ 5 5 — Positive (highest) power supply
V– 2 2 — Negative (lowest) power supply
GUID-20200923-CA0I-Z4RZ-SS1N-83VSKFFBBLKF-low.gif
DRL package is preview only.
Figure 5-3 OPA991S DBV and DRL Package(A)
6-Pin SOT-23 and SOT-563
(Top View)
Table 5-2 Pin Functions: OPA991S
PIN I/O DESCRIPTION
NAME NO.
+IN 3 I Noninverting input
–IN 4 I Inverting input
OUT 1 O Output
SHDN 5 I Shutdown: low = amplifier enabled, high = amplifier disabled. See Section 7.3.11 for more information.
V+ 6 — Positive (highest) power supply
V– 2 — Negative (lowest) power supply
Figure 5-4 OPA2991 D, DDF, DGK, and PW Package
8-Pin SOIC, SOT-23, TSSOP, and VSSOP
(Top View)
Connect thermal pad to V–. See Section 7.3.10 for more information.
Figure 5-5 OPA2991 DSG Package(A)
8-Pin WSON With Exposed Thermal Pad
(Top View)
Table 5-3 Pin Functions: OPA2991
PIN I/O DESCRIPTION
NAME NO.
+IN A 3 I Noninverting input, channel A
+IN B 5 I Noninverting input, channel B
–IN A 2 I Inverting input, channel A
–IN B 6 I Inverting input, channel B
OUT A 1 O Output, channel A
OUT B 7 O Output, channel B
V+ 8 — Positive (highest) power supply
V– 4 — Negative (lowest) power supply
GUID-20200923-CA0I-PDLJ-ZGRX-JK959RBXDZK1-low.gif
Package is preview only.
Figure 5-6 OPA2991S DGS Package(A)
10-Pin VSSOP
(Top View)
GUID-20200923-CA0I-GKL7-PBSM-D9N0XW3ZL1HM-low.gifFigure 5-7 OPA2991S RUG Package
10-Pin X2QFN
(Top View)
Table 5-4 Pin Functions: OPA2991S
PIN I/O DESCRIPTION
NAME VSSOP X2QFN
+IN A 3 10 I Noninverting input, channel A
+IN B 7 4 I Noninverting input, channel B
–IN A 2 9 I Inverting input, channel A
–IN B 8 5 I Inverting input, channel B
OUT A 1 8 O Output, channel A
OUT B 9 6 O Output, channel B
SHDN1 5 2 I Shutdown, channel 1: low = amplifier enabled, high = amplifier disabled. See Section 7.3.11 for more information.
SHDN2 6 3 I Shutdown, channel 2: low = amplifier enabled, high = amplifier disabled. See Section 7.3.11 for more information.
V+ 10 7 — Positive (highest) power supply
V– 4 1 — Negative (lowest) power supply
Figure 5-8 OPA4991 D, PW, and DYY Packages
14-Pin SOIC, TSSOP, SOT-23
(Top View)
Figure 5-9 OPA4991 RUC Package
14-Pin X2QFN
(Top View)
Table 5-5 Pin Functions: OPA4991
PIN I/O DESCRIPTION
NAME SOIC, TSSOP, SOT-23 X2QFN
IN1+ 3 2 I Noninverting input, channel 1
IN1– 2 1 I Inverting input, channel 1
IN2+ 5 4 I Noninverting input, channel 2
IN2– 6 5 I Inverting input, channel 2
IN3+ 10 9 I Noninverting input, channel 3
IN3– 9 8 I Inverting input, channel 3
IN4+ 12 11 I Noninverting input, channel 4
IN4– 13 12 I Inverting input, channel 4
NC — — — Do not connect
OUT1 1 14 O Output, channel 1
OUT2 7 6 O Output, channel 2
OUT3 8 7 O Output, channel 3
OUT4 14 13 O Output, channel 4
V+ 4 3 — Positive (highest) power supply
V– 11 10 — Negative (lowest) power supply