Inside every electronics product is a printed circuit board, or PCB. In the early days of printed circuit board design the demands on the PCB were simple, the board provided mechanical mounting for the components and connected the appropriate pins together - implementing the logical design defined on the schematic. Today, the components have shrunken so much they are measured in fractions of a millimeter rather than centimeters, and track widths have shrunken from being 10 mil wide, well spaced lines, to thin, 2 or 3 mil hair-like lines tightly packed together. Rising signal speeds has also seen the PCB interconnects change from being simple copper conduits that carry electrical energy, to behaving as high-speed transmission lines, requiring design techniques to cater for this. Lower device supply rails introduces tight demands on the allowable voltage drops, requiring careful design of the power distribution network. Combine these, and the modern PCB is a dense, multi-layered engineering design challenge.
Signal HS-V Suggested layer stackups for 4, 6, 8, 10 and 12 layer boards. To summarize, the process of routing a board with high speed signals requires you to manage:
Altium Designer. Урок 1 - Создание проекта и шаблонов