Hi,
I am using ad642 in my design , I am getting this kind of sinewave. The procedure I followed is, first have established spi configuration, read and write of spi is working properly and i have used spi clock 25Mhz.So as mentioned in data sheet , i checked with user pattern and its coming fine, and when checking ramp data that is also coming bit fine but with spikes, after adding dco delay it was fine. But the problem is when i am feeding the analog signal at the input and when we read the data with writing to 0x0d0. And also i am changing the dco delay with register value 0x017 , with delay 0x1790 and 0x1001 and 0x180f with these register values ,I am getting the waveform which is given below, not getting proper sinewave .
Thanks in advance.
