SBOS957D February   2022  – December 2023 OPA2328 , OPA328

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 - OPA328
    5. 5.5 Thermal Information - OPA2328
    6. 5.6 Electrical Characteristics
    7. 5.7 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 Input and ESD Protection
      2. 6.3.2 Rail-to-Rail Input
      3. 6.3.3 Phase Reversal
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Capacitive Load and Stability
    2. 7.2 Typical Applications
      1. 7.2.1 Bidirectional Current-Sensing
        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 Transimpedance Amplifier
    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)
        3. 8.1.1.3 DIP-Adapter-EVM
        4. 8.1.1.4 DIYAMP-EVM
        5. 8.1.1.5 Filter Design Tool
    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)
  • D|8
  • DGK|8
  • DRG|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.2.1 Bidirectional Current-Sensing

This single-supply, low-side, bidirectional current-sensing design example detects load currents from –1 A to +1 A. The single-ended output spans from 110 mV to 3.19 V. This design uses the OPAx328 because of the low offset voltage and rail-to-rail input and output. One of the amplifiers is configured as a difference amplifier and the other amplifier provides the reference voltage.

Figure 7-2 shows the schematic.

GUID-DA97A100-DE8B-4B38-A02B-2EAEC60257BC-low.gif Figure 7-2 Bidirectional Current-Sensing Schematic