SBOSAK3 July   2025 INA299-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 Amplifier Input Common-Mode Signal
      2. 6.3.2 Low Input Bias Current
      3. 6.3.3 Low VSENSE Operation
      4. 6.3.4 Wide Fixed Gain Output
      5. 6.3.5 Wide Supply Range
    4. 6.4 Device Functional Modes
      1. 6.4.1 Adjusting the Output With the Reference Pin
      2. 6.4.2 Reference Pin Connections for Unidirectional Current Measurements
        1. 6.4.2.1 Ground Referenced Output
        2. 6.4.2.2 VS Referenced Output
      3. 6.4.3 Reference Pin Connections for Bidirectional Current Measurements
        1. 6.4.3.1 Output Set to External Reference Voltage
        2. 6.4.3.2 Output Set to Mid-Supply Voltage
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 RSENSE and Device Gain Selection
    2. 7.2 Typical Application
      1. 7.2.1 High-side Current Sensing in Motor Application
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Power Supply Decoupling
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.4 Wide Fixed Gain Output

The INA299-Q1 maximum gain error is ±0.25% at room temperature, with a maximum drift of ±10ppm/°C over the full temperature range of –40°C to +125°C. The INA299-Q1 is available in multiple gain options of 20V/V, 50V/V, and 100V/V which the system designer must select based on the desired signal-to-noise ratio and other system requirements, such as the dynamic current range and full-scale output voltage target.