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impact of SFDR (Read 2666 times)

VNF New Member Offline Posts: 8	impact of SFDR Nov 12^th, 2013, 9:14am Hi, I wonder what is the real impact of SFDR by itself? e.g. two ADCs having the same SINAD, one has a better or wrose SFDR than the other, then how is that difference in SFDR reflected in the end? thanks, Kev
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aaron_do Senior Fellow Offline Posts: 1398	Re: impact of SFDR Reply #1 - Nov 12^th, 2013, 11:52pm Hi, In the context of a communications system, it affects your bit error rate. regards, Aaron
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rfmagic

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Re: impact of SFDR
Reply #2 - Nov 23^rd, 2013, 3:44pm

As SINAD determines the ENOB of the two converters the bit error rate will probably be the same for both.
If SFDR is different between the 2 converters it means that SINAD is dominated by non-linear distortion while the other converter is dominated by random noise. Based on this information you can determine how and what to improve in the circuit level in order to get better SINAD.

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