The signal block diagram is shown below.
I want to get a sine wave of 10MHz.The clk of AD9136 is 245.76MHz.
But I found high spurs in output of AD9136 after change an othor FPGA(diffrent model).
They are a mix of 10MHz and 122.88MHz's harmonics, like 112.88MHz and 132.88MHz.
They are too high to eliminate. I tried some methods and the spurs do not change.
So I want to known where the spurs probably come from? AD9136 or the FPGA data?