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Reference Clock AD9958

Question asked by greenhorn on Mar 6, 2013
Latest reply on Mar 7, 2013 by sitti


I want to use the AD9958 for my application and i've thought a lot about what to use for reference clock. Of course the easiest way is to use a crystal and 2 capacitors and the internal oscillator. But what if i want to use a crystal oscillator, how do i have to connect it to the DDS Chip?

So if i'm using a crystal oscillator in single ended mode all i have to do is to connect the output to the ref_clk pin?

But if i'm using differential mode i have to use the circuit as shown in figure 33 of the datasheet?


Thanks a lot.