I am having trouble getting an accurate VAC reading from the ADP1048. Below are my results from testing the input voltage range. As you can see the percentage error slowly increases with an increasing input voltage. There is no offset error in the measurement as a 0V input gives a 0V reading on the GUI. Can anyone advise what might be causing this error? The circuit for measuring the AC input is attached.
|Input (Vrms)||ADP1048 Measurement (Vrms)||Error (%)|