Hey,I'm a new user of AD9914. Recently,I encountered some problems with using PLL of AD9914..
My external clock is 100MHz,and I hope to dpuble it to 2450MHz as system clock.And the output is 25.0375MHz.
So I enable RDIV 4 to divided 100MHz to 25MHz,then I set N=49,So the system clock is 25 * 49 * 2 = 2450MHz.
But when I measured the the SYNC_CLK,there was no 102MHz singnal . When I measured the pin 59 ,it was 1.8v (default 2.05V ),also ,there was no output singal .So I think the PLL of my AD9914 not working well..Here is my configuration of register.
Hope sb can help me,and find what's wrong with my DDS, thanks a lot!