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AD9957 output SFDR

Question asked by SAURABH on Feb 5, 2013
Latest reply on Feb 20, 2013 by DSB

i am  getting noiser output spectrum,i am attaching spectrum analyzer snapshot, i am using 20 MHz TCXO,Sys clk running at 1GHz (Multipliar of 50).Sys clk/4 output is disabled. pl suggest where is the problem.