I'm in front of a big question. I need to route 90 Ohms differential lines for a USB 2.0 Project.
I understand how to use tools like Saturn PCB Design to give me the correct spacing and lines width.
But it seems difficult to achieve fabrication constraints, for example with Eurocircuits :
I can't route these lines with basic technology settings (0.15mm) ? Although i can route larger lines, i can't use >1mm widths on some integrated circuits.
Thank's to help me to understand how to achieve the best compromise between pcb layout constraints and signal integrity requirements.