SBOS475K March   2009  – November 2023 INA210-Q1 , INA211-Q1 , INA212-Q1 , INA213-Q1 , INA214-Q1 , INA215-Q1

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
    5. 5.5 Electrical Characteristics
    6. 5.6 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 Basic Connections
      2. 6.3.2 Selecting RS
    4. 6.4 Device Functional Modes
      1. 6.4.1 Input Filtering
      2. 6.4.2 Shutting Down the INA21x-Q1 Series
      3. 6.4.3 REF Input Impedance Effects
      4. 6.4.4 Using the INA21x-Q1 with Common-Mode Transients Above 26 V
      5. 6.4.5 Improving Transient Robustness
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Unidirectional Operation
        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 Bidirectional Operation
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curve
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Related Links
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.2.2.2 Detailed Design Procedure

The ability to measure this current flowing in both directions is enabled by applying a voltage to the REF pin, as shown in Figure 7-3. The voltage applied to REF (VREF) sets the output state that corresponds to the zero-input level state. The output then responds by increasing above the VREF value for positive differential signals (relative to the IN– pin) and responds by decreasing below the VREF value for negative differential signals. This reference voltage applied to the REF pin can be set anywhere between 0 V to V+. For bidirectional applications, the VREF value is typically set at mid-scale for equal signal range in both current directions. In some cases, however, the VREF value is set at a voltage other than mid-scale when the bidirectional current and corresponding output signal are note required to be symmetrical.