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Is it possible to generate 500MHz sine waves using the AD9958?

Question asked by karhall on Jul 20, 2016
Latest reply on Jul 20, 2016 by JLKeip

I am currently using the AD9958/59 to generate some sine waves to use in our system. The board's specifications state that it should be capable of operating at frequencies up to 500MHz.

 

However, at frequencies above 200MHz it seems as though the output frequencies are not as expected.

 

My current set-up:
Ref Clk = 50MHz
x10 Multiplier
Sys Clk = 500MHz

 

Then I am trying to use Channel0 to generate a sine wave of:
300MHz and I get 200MHz
400MHz and I get 100MHz

 

What is the correct way to generate sine waves at higher frequencies?

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