SBOSA65A July   2021  – March 2026 OPA2396 , OPA396 , OPA4396

PRODUCTION DATA  

  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: OPA396
    5. 5.5 Thermal Information: OPA2396
    6. 5.6 Thermal Information: OPA4396
    7. 5.7 Electrical Characteristics
    8. 5.8 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 4mA to 20mA Loop Design
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 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

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7.2.2 4mA to 20mA Loop Design

Factory automation systems commonly use the 4mA to 20mA (4-20mA) communication protocol to enable process automation. In typical 2-wire, 4mA to 20mA loop applications, power to the remote transmitter is limited to less than 4mA total consumption. As a result of the power limitations, low power consumption is essential. The OPAx396 solves many design challenges in 4mA to 20mA loop applications, where low power, high accuracy, and high bandwidth are required.

OPA396 OPA2396 OPA4396 4-20mA Loop Interface Schematic Figure 7-4 4-20mA Loop Interface Schematic