Mixed analog/digital layout consideration

Thread Starter


Joined Jun 15, 2009
I'm in layout editing session of mixed signal very small PCB, Very low current signals (nA) and fast digital lines. (Address, data, Etc)
I'm trying to take into consideration all the crosstalk preventing rull of thumb such as keeping all the sensitive signals far away from the digital lines, avoiding making 90 degree trace turns on trace runs and Etc.
My question is what do I do when digital traces must cross very close to analog VIAs? Should I worry about crosstalk in such case? What is the minimum distance I have to keep from a digital trace and very low current analog signal VIA?