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AD9683 - Two tone SFDR degrades as tone seperation gets closer in (10KHz). Thoughts?

Question asked by apaulino@drs.com on Jan 30, 2018
Latest reply on Feb 20, 2018 by PMH

We made an observation with regards to the two tone SFDR measurement (IMD3), where as the tone separation narrows from 3MHz down to 10KHz, the SFDR performance degrades. This is issue is more pronounce in the 2nd Nyquist zone.

 

Thoughts?

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