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AD8302  relationship between amplitude and phase

Question asked by Verti on Apr 11, 2017
Latest reply on Apr 11, 2017 by jdobler

Dear Specialists,

          We use AD8302 to measure 20k to 100Khz input signal  phase difference and follow description of AN-691.

Now we find the test result of phase difference is affected by the sine wave's  amplitude, does this is normal?

We can not find related info between them in document or datasheet.

        Can you kindly help to check it, sorry for trouble you.