Team,
Is there any restriction about the max distance between the Shunt and the 1NA202AQDGK?
If so, do we have some estimates?
thanks,
Juan
Juan,
We do not specify a maximum disatance, but please check out the highlighted video below on this very topic. General best practice is to keep the shunt traces as short as possible, and matched as well as possible. Longer traces can complicate the measurement by acting as unintentional antennae for noise and EMI artefacts. Longer traces also come with trace resistances and capacitive coupling that can increase error to the measurement.
Juan,
the device will vary slightly over temperature due to drift parameters in the device itself, as well as drift parameters in the shunt. Shunt choice is paramount here, as a wildly changing resistance over temp will result in additional error to the measurement.
As for drift of the device, these can be found in the datasheet for various parameters. As an example, you can see the room temperature gain error spec vs. the gain error spec over temperature below:
