Post Go back to editing

DDS with phase marker?

Thread Summary

The user is designing a Howland Current Pump and wants to add a phase marker pulse when zero phase is reached. The AD9954 can be used for this purpose by utilizing both the DAC output and the integrated comparator, or an external comparator can be added to the AD9102. The DOUT pin on the AD9102 can indicate pattern generation status but does not provide a zero-crossing pulse.
AI Generated Content

Hello,

I am designing a Howland Current Pump, and I have previously used the AD9954 and AD9833 to generate the sine waves. I was looking to use the AD9102 as it seems easier to get hold of from suppliers, and has a broader frequency range for a single clock.

However, one feature I would like to add to my design is a phase marker i.e. a pulse on another pin when zero phase is reached. Is there a DDS IC that has this feature? or is there an example circuit (like a comparator after the DAC output?) 

Thanks for any advice you can offer!

Jimbles

Parents Reply Children
No Data