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AD9956 outputs clock at 400mV, I was expecting 1.8V.

Category: Software
Product Number: AD9956

I have the AD9956 eval board and am feeding in a 1V peak to peak 400MHz ref clock. I am able to generate an output clock at 50Mhz, but its only 400mV peak to peak. The logic bus this runs into operates at 1.8V, and I was expecting this clock to output around there. Any idea what I could be doing wrong? Or is this part intended to output the clock voltage around 400mV peak to peak?

Top Replies

  • Hi  ,

    Based on the values you gave, the numbers are still normal. That means you're doing it right. The intended output clock voltage should be around 400mV peak-to-peak. 

    From the datasheet…