anders.e.e.wallin@gmail.com said: > I see around 150-200ps skew which I tried to tune a bit with wires and 0R > resistors - without very much success.. any ideas for improving this - or > just leave it at 200ps skew? I don't have the numbers handy, but that's ballpark of an inch of trace on a PCB. Outer layers are slightly faster than inner layers. Details depend on the materials. Solder mask slows down the outer layer slightly and things like that. -- These are my opinions. I hate spam.