I have tried to use the ADISimDDS tool at http://designtools.analog.com/dtDDSWeb/dtDDSMain.aspx
but find that it does not give us the Ref Clock Multiplier option.
For example, I am using AD9910 DDS, Ref clock frequency 10 MHz, Desired output frequency 300 MHz.
The ref clock multiplier gives only the option Bypass (no multiplier). Why is the multiplier option not provided in this case?
Many thanks in advance