I have a question about ADuM3190.
One of our customers are trying to use ADuM3190 as iso-AMP.
They said when they change the input voltage , the refout-voltage will change too.
=>In our customers case , REFout will change 1.220 to 1.245 when the input voltage changes 0 to 2V.
I think this is impossible because +IN-pin is Hi-Z input pin and also REFout has enough drive power.
Anyway , +IN and -IN is not connected so REFout-voltage won't change.
Is this correct?
I tested the customers circuit with our Eval-Board but REFout won't change.
=>Please see my attached file.
Is there any possibility , can you give me some advice about this?