I have a question about ADuM3190.
At this thread, What does the 1% accuracy of the ADuM3190/4190 include? it says
"The 1% accuracy specification includes the use of the ADuM3190/4190 in an
isolated feedback loop and includes drift over temperature from -40˚C to 125˚C.".
At your datasheet, 1% accuracy was measured by Figure 27 circuit.
I thought -IN pin voltage will be REF±Input offset = 1.225±5mV.
EAOUT will be same voltage with -IN pin.
So the accuracy should be 5mV/1.225 * 100 = 0.4%.
But datasheet says it is 1%.
Why the value is different?