SBOU187A april 2017 – april 2023 INA233
The I2C communication lines on the INA233EVM are tied to two sources: the internal I2C communication lines from the SM-USB-DIG and test points SCL and SDA. If the user wants to add external signals separate from the SM-USB-DIG, simply disconnect the SM-USB-DIG from the INA233EVM board and hook up the necessary SDA, SCL, and GND lines. Also, remember to apply an external supply to the lines that is compatible with the I2C communication device being used.
Failure to disconnect the SM-USB-DIG while using external I2C communication can cause damage to the SM-USB-DIG or any external communication devices that are connected.