Hi all,

I hope I could have some real help from the DLL experts in this forum. Let me first describe my problem referring to the attached file.
Basically I want to make a Delay Locked Loop. However, the delay lines inside the loop are composed of (1-delta%) and delta% which give the total 100% delay (or 2*pi) phase shift. Then I want to make a tap selection from the part of the delta%.
The question is how to design this delay cell and how to further make the delta% reconfigurable, for instance I can easily change the percentage of delta (for instance from 5% to 20%).

thank you for your help !


Jef