Tool/software:
Hi everyone,
I'm currently working on implementing frequency modulation using the DAC5688. I understand that in order to continuously change the output frequency, I need to update the Frequency Tuning Word (FTW) and issue a sync (either software or hardware).
However, from what I've observed and confirmed in the datasheet, issuing a sync causes the NCO (Numerically Controlled Oscillator) to reset its accumulator. This results in a noticeable glitch in the output signal whenever the frequency is updated.
Is this the intended behavior?
Am I missing a configuration that allows frequency updates without resetting the accumulator?
Or is there an alternative method to perform continuous frequency modulation using the DAC5688 without causing output glitches?
Any guidance or shared experience would be greatly appreciated. Thanks in advance!