SBOA539 January   2023 INA219 , INA232

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
    1. 1.1 INA232 and INA219
  4. 2Migrating From INA219 to INA232
    1. 2.1 Package Selection and Pinout
    2. 2.2 Device Address
    3. 2.3 Shunt Voltage Range
    4. 2.4 Power Supply and IO Voltage Levels
    5. 2.5 Digital Interface and Data Format
    6. 2.6 Register Set
    7. 2.7 Accuracy
    8. 2.8 Unique Features
  5. 3Implementation
    1. 3.1 Identify Suitable Migration Projects
    2. 3.2 Bench Setup and Hardware
    3. 3.3 Result Registers and Calculation
    4. 3.4 Software Implementation

2 Migrating From INA219 to INA232

Since INA232 is not a drop-in replacement for INA219, certain modifications are necessary for the existing firmware to work when migrating from INA219 to INA232. Further, it is advantageous to update the firmware so that the device is backward compatible. Correct settings and math calculations can be applied depending on the device populated on the application board.

Although not entirely identical, INA219 and INA232 are highly similar in terms of package and pinout. In some migration projects, there is no need for hardware change at all; while in some, it is simply a matter of minor assembly and BOM adjustment. However, the specifics need to be decided based on the individual projects.