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ADP1048 SUPPORT 1

Question asked by EdwardPBDesign on Nov 3, 2017
Latest reply on Nov 7, 2017 by LtCommData

Hi Guys,

 

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 (%)
39.9742.56.32974731
59.9764.257.136901784
79.9885.757.214303576
99.97107.57.532259678
119.981297.517919653
140.061517.810938169
160.05172.757.935020306
180.02194.58.043550717
200216.258.125
220.01238.258.290532249
2402608.333333333
259.98281.758.373721055

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