SBOS844D May   2021  – August 2025 INA234

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 Timing Requirements (I2C)
    7. 5.7 Timing Diagram
    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 Integrated Analog-to-Digital Convertor (ADC)
      2. 6.3.2 Power Calculation
      3. 6.3.3 Low Bias Current
      4. 6.3.4 Low Voltage Supply and Wide Common-Mode Voltage Range
      5. 6.3.5 ALERT Pin
    4. 6.4 Device Functional Modes
      1. 6.4.1 Continuous Verses Triggered Operation
      2. 6.4.2 Device Shutdown
      3. 6.4.3 Power-On Reset
      4. 6.4.4 Averaging and Conversion Time Considerations
    5. 6.5 Programming
      1. 6.5.1 I2C Serial Interface
      2. 6.5.2 Writing to and Reading Through the I2C Serial Interface
      3. 6.5.3 High-Speed I2C Mode
      4. 6.5.4 General Call Reset
      5. 6.5.5 General Call Start Byte
      6. 6.5.6 SMBus Alert Response
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Device Measurement Range and Resolution
      2. 7.1.2 Current and Power Calculations
      3. 7.1.3 ADC Output Data Rate and Noise Performance
      4. 7.1.4 Filtering and Input Considerations
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Select the Shunt Resistor
        2. 7.2.2.2 Configure the Device
        3. 7.2.2.3 Program the Shunt Calibration Register
        4. 7.2.2.4 Set Desired Fault Thresholds
        5. 7.2.2.5 Calculate Returned Values
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Register Maps
    1. 8.1 Device Registers
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

1 Features

  • High-side or low-side current sensing
  • Operates from a 1.7V to 5.5V power supply
  • Reports current, voltage and power
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3V to 28V
  • Current monitoring accuracy:
    • 12-bit ADC resolution
    • 0.5% gain error (maximum)
    • 100µV offset (maximum)
  • Low input bias current: 10nA (maximum)
  • Configurable averaging options
  • General call addressing allows conversion synchronization among devices
  • Alert limits for over and under current events
  • 1.2V compliant I2C, SMBus interface
  • Two device address options with a 4-pin selectable address
  • DSBGA-8 Package (0.745mm × 1.508mm)
  • Operating temperature: –40°C and +125°C