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I2C

roger roisen1
Prodigy 50 points
Part Number: INA219

I want to use the INA219 to monitor 6 power supplies with the high side sensor using the I2C bus.  Is there a simple way to address each of the INA219 using the same I2C bus?  I see it is obvious on how to address 4 of them by setting the A0 A1 address bits but I need more than 4 devices so I did not want to hard wire the A0 A1.  I have a uP to talk to the current sensors but it is not obvious on how to address multiple devices with the same I2C address.

thanks!

Roger

  • 0
    TI__Mastermind 22650 points

    Roger,

    Thanks for using E2E!

    The address lines you mention are not quite as binary as they seem. In addition to being able to tie them to GND or Vs, you are also able to tie these lines to SDA and SCL for the purposes of addressing:

    This actually gives you the ability to generate up to 16 addresses, not 4. You should be able to geenrate the 6 unique addresses you need by following the attached table from the datasheet.