AnsweredAssumed Answered

digital ramp and phase clear in AD9914

Question asked by Radarrr on Jun 14, 2018
Latest reply on Aug 7, 2018 by Radarrr

Hello, I am using AD9914 for LFM signal.


I want the AD9914 to have a period of 20us and generate an LFM signal for 1us.
I also want to set the output voltage level to 0 when the signal ends after 1us and make sure that the starting phase of the signal is always the same.
I am making a LFM signal using the no dwell ramp generation function.
To clear the phase, turn on the autoclear phase, and when I / O update is turned on at the end of the signal, the phase is cleared with a slight delay. I want to zero the phase of the signal at the exact timing at which the signal ends. Please let me know if there is a good way.

To summarize, I want to make the starting phase of the periodic LFM signal always the same, and when the LFM signal ends, I want to set the phase to 0 so that there is no DC value.


Please let me know if there is a good way