newic wrote on Oct 12th, 2010, 5:15am:Which approach is better?
1. put differential lines close together and get large CC
2. put differential lines apart like 2x min spacing, and get lower CC
Having a large CC migth not be harmful, depending on the nature of your differential signal: if your signal is a low pass one most probably that CC will help filter it out and it ends up being beneficial. On the other hand if your diff signal is high frequency and / or diff clock signals you should look for minimizing CC.
Best
Tosei