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FM Modulation with AD9914

Question asked by arunverma on Aug 29, 2013
Latest reply on Aug 30, 2013 by arunverma



I have generated 3.0GHz FM modulated signal with 20% deviation (40% BW) and i tried to give it to AD9914 input as a ref signal. I found that upto 5% of deviation DDS output is clean FM modulated but when i increase my deviation DDS output is very noise and not able to get any FM modulated output.

I just wanna know is there any limitation for ref signal to AD9914 or something wrong in our hardware.