I am working with a DDS AD9914. My REF_CLK is a 25 MHz RF oscillator. What is the difference between having an RF oscillator and a clock as REF_CLK? Are the phase noise specs the same for both sources?
By using the internal AD9914 PLL, I'm getting 2.5 GHz. Is there any way to get this signal out of the DDS so I can use it externally? Is it an RF oscillator or a CLK?
Thanks so much,