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AD9957's  External REF_CLK

Question asked by xubing on Nov 20, 2013
Latest reply on Dec 4, 2013 by JLKeip

Hi, everyone!

 

Here I have a problem with the Evaluation Board of AD9957. I want to drive the AD9957 using an external signal source instead of the 25MHz Crystal on the board. The problem is that the Evaluation Board of AD9957 requires the REF_CLK input level be 50-1000 mV(singled-ended). But most of the oscillator's Vcc does not meet this requirement. Do you have any solution?  Thanks very much!

 

Best Regards!

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