Part Number: INA219
Dear Support Team,
I hope this message finds you well. We are currently utilizing the INA219 IC for our current measurement needs, employing a 0.1 Ohm sense resistor in conjunction with the INA219 operating within a 16V range, while employing a PGA setting of /1. The primary objective of our application is to achieve a current measurement resolution of 0.1 mA, a goal which aligns well with the mentioned settings.
It has come to our attention that the INA219 has certain operational thresholds, particularly a maximum shunt voltage of 40 mV and a current limit of 400 mA. Regrettably, our application experiences instances in which these thresholds are exceeded when the device under test is not in sleep mode. During these intervals, the current passing through the sense resistor occasionally surges to 1A, leading to a corresponding Vshunt of around 100 mV.
Our primary concern is directed towards the current measurement process during the sleep mode of the Device under Test. Given the specific conditions, we are interested to know whether the INA219 can tolerate exceeding the Vshunt limit for brief durations without causing detrimental effects to its functionality or accuracy.
We greatly appreciate your expertise and guidance in this matter. Your insights will be invaluable in ensuring the seamless and accurate operation of our current measurement setup.
Thank you for your time and assistance.
Best regards,
Jaydeep Panchal
