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Which phase characteristics of the local is better, ADL5387 and ADL5382?

Question asked by akibo924 on Jul 26, 2017
Latest reply on Aug 18, 2017 by stanis

Hi, all. I'm designing the quadrature detector by using ADL5382 or ADL5387. I wonder which is better in view of the phase noise of each LO interface.  An ADL5387 needs 2x fLO for LO input, but an ADL 5382 needs only 1xfLO. I think that ADL5382 includes the frequency doubler in order to generate both in-phase and quadrature phase local frequency. Am I right? If so, I believe that ADL5387 is better because the doubler of the ADL5382 might  have more phase error as to the local frequency. Is it correct?

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