AD8302 Full phase detection

Document created by analog-archivist Employee on Feb 23, 2016Last modified by analog-archivist Employee on Feb 23, 2016
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I have purchased an AD8302 evaluation board and am looking to use it to detect
a phase difference of the incoming signals. Is it possible to tell the
difference between a positive and negative phase difference as as far as I can
see they will both always give the same voltage.

 

Attached is one way of detecting positive or negative phase difference:
basically using two AD8302's to make a 360 degree phase detector.

Another way to do it is with an IQ demodulator (also attached).
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