SBOS547B June   2011  – September 2024 INA226

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 ADC Functions
        1. 6.3.1.1 Power Calculation
        2. 6.3.1.2 Alert Pin
    4. 6.4 Device Functional Modes
      1. 6.4.1 Averaging and Conversion Time Considerations
      2. 6.4.2 Filtering and Input Considerations
    5. 6.5 Programming
      1. 6.5.1 Programming the Calibration Register
      2. 6.5.2 Programming the Power Measurement Engine
        1. 6.5.2.1 Calibration Register and Scaling
      3. 6.5.3 Simple Current Shunt Monitor Usage (No Programming Necessary)
      4. 6.5.4 Default Settings
      5. 6.5.5 Bus Overview
        1. 6.5.5.1 Serial Bus Address
        2. 6.5.5.2 Serial Interface
        3. 6.5.5.3 Writing to and Reading From the INA226
          1. 6.5.5.3.1 High-Speed I2C Mode
        4. 6.5.5.4 SMBus Alert Response
  8. 7 Registers
    1. 7.1 Register Maps
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 High-Side Sensing Circuit Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.1.3 Application Curves

Figure 8-2 shows the Alert pin response to a shunt voltage over-limit of 80 mV for a conversion time (tCT) of 1.1 ms and averaging set to 1. Figure 8-3 shows the response for the same limit but with the conversion time reduced to 140 µs.

INA226 Alert Response
See Table 8-1tCT = 1.1 ms
See Table 8-3See Table 8-4
Figure 8-2 Alert Response
INA226 Alert Response
See Table 8-2tCT = 140 µs
See Table 8-3See Table 8-4
Figure 8-3 Alert Response
Table 8-1 Configuration Register (00h) Settings for Figure 8-2 (Value = 4025h)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		RST———AVG2AVG1AVG0VBUSCT2VBUSCT1VBUSCT0VSHCT2VSHCT1VSHCT0MODE3MODE2MODE1
POR VALUE0100000000100101
Table 8-2 Configuration Register (00h) Settings for Figure 8-3 (Value = 4005h)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		RST———AVG2AVG1AVG0VBUSCT2VBUSCT1VBUSCT0VSHCT2VSHCT1VSHCT0MODE3MODE2MODE1
POR VALUE0100000000000101
Table 8-3 Mask/Enable Register (06h) Settings for Figure 8-2 and Figure 8-3 (Value = 8000h)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		SOLSULBOLBULPOLCNVR—————AFFCVRFOVFAPOLLEN
POR VALUE1000000000000000
Table 8-4 Alert Limit Register (07h) Settings for Figure 8-2 and Figure 8-3 (Value = 7D00)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		AUL15AUL14AUL13AUL12AUL11AUL10AUL9AUL8AUL7AUL6AUL5AUL4AUL3AUL2AUL1AUL0
POR VALUE0111110100000000