SBOS925E December   2020  – October 2024 OPA2391 , OPA391 , OPA4391

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information: OPA391
    5. 5.5 Thermal Information: OPA2391
    6. 5.6 Thermal Information: OPA4391
    7. 5.7 Electrical Characteristics: OPA391DCK and OPA2391YBJ
    8. 5.8 Electrical Characteristics: OPA2391DGK and OPA4391PW
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Low Input Bias Current
      2. 6.3.2 Input Differential Voltage
      3. 6.3.3 Capacitive Load Drive
      4. 6.3.4 EMI Rejection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Three-Terminal CO Gas Sensor
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 4-mA to 20-mA Loop Design
        1. 7.2.2.1 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 PSpice® for TI
        2. 8.1.1.2 TINA-TI™ Simulation Software (Free Download)
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Pin Configuration and Functions

OPA391 OPA2391 OPA4391 OPA391: DBV Package (Preview), 5-Pin SOT-23 (Top View)Figure 4-1 OPA391: DBV Package (Preview), 5-Pin SOT-23 (Top View)
OPA391 OPA2391 OPA4391 OPA391: DCK Package, 5-Pin SC-70 (Top View)Figure 4-2 OPA391: DCK Package, 5-Pin SC-70 (Top View)
Table 4-1 Pin Functions: OPA391
PIN TYPE DESCRIPTION
NAME NO.
DBV (SOT-23) DCK (SC70)
–IN 4 3 Input Inverting input
+IN 3 1 Input Noninverting input
OUT 1 4 Output Output
V– 2 2 Power Negative (lowest) power supply
V+ 5 5 Power Positive (highest) power supply
OPA391 OPA2391 OPA4391 OPA2391: D Package (Preview), 8-pin SOIC and DGK Package, 8-Pin VSSOP (Top View)Figure 4-3 OPA2391: D Package (Preview), 8-pin SOIC and DGK Package, 8-Pin VSSOP (Top View)
Figure 4-4 OPA2391: YBJ Package, 9-Pin DSBGA (Top View)
Table 4-2 Pin Functions: OPA2391
PIN TYPE DESCRIPTION
NAME NO.
D (SOIC),
DGK (VSSOP)		 YBJ (DSBGA)
EN — B2 Input Enable pin. High = both amplifiers enabled.
–IN A 2 B1 Input Inverting input, channel A
+IN A 3 C1 Input Noninverting input, channel A
–IN B 6 B3 Input Inverting input, channel B
+IN B 5 C3 Input Noninverting input, channel B
OUT A 1 A1 Output Output, channel A
OUT B 7 A3 Output Output, channel B
V– 4 C2 Power Negative (lowest) power supply
V+ 8 A2 Power Positive (highest) power supply
OPA391 OPA2391 OPA4391 OPA4391: PW Package, 14-Pin TSSOP (Top View)Figure 4-5 OPA4391: PW Package, 14-Pin TSSOP (Top View)
Table 4-3 Pin Functions: OPA4391
PIN TYPE DESCRIPTION
NAME NO.
–IN A 2 Input Inverting input, channel A
+IN A 3 Input Noninverting input, channel A
–IN B 6 Input Inverting input, channel B
+IN B 5 Input Noninverting input, channel B
–IN C 9 Input Inverting input, channel C
+IN C 10 Input Noninverting input, channel C
–IN D 13 Input Inverting input, channel D
+IN D 12 Input Noninverting input, channel D
OUT A 1 Output Output, channel A
OUT B 7 Output Output, channel B
OUT C 8 Output Output, channel C
OUT D 14 Output Output, channel D
V– 11 Power Negative (lowest) power supply
V+ 4 Power Positive (highest) power supply