Other Parts Discussed in Thread: INA214
I'm using the INA214-Q1, in the configuration below, for measure the output current of a 0,85V power supply with 2A of nominal current.
I made some tests with a Rshunt=7mohm and the difference between the microcontroller value and the real value (measured on Rshunt) it's 100mA. In other tests done with Rshunt=2mohm (in the same test conditions of Rshunt=7mohm) the difference between the microcontroller value and the real value it's 400mA. The shoftware scale factor is correcti in both measures. Why there is this big difference between two measures? A 2mohm vlalue is too low for Rshunt? The 0,85V power supply output voltage is too low for INA214-Q1 input?
Thanks & Best Regards,