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

2.4 Power Supply and IO Voltage Levels

INA219 is powered between 3 V and 5.5 V, consuming a typical quiescent current of 700 μA under normal working conditions. In power down mode, the quiescent current decreases to 6 μA. Logic input levels are relative to power supply level. The minimum logic high is 0.7 VS, and maximum logic low is 0.3 VS.

INA232 has a wider working supply range, spanning 1.7 V to 5.5 V. Typical operating quiescent current is 300 μA, which decreases to 2.2 μA in shutdown mode. Logic input levels are independent of power supply. The minimum logic high and maximum logic low are 0.9 V and 0.4 V, respectively.

Power-supply levels are fully forward compatible migrating from INA219 to INA232. There are some differences in logic levels, but these differences do not pose any problem in most cases. Examine the power-supply levels to make sure of reliable communication with the controller.