High impedance drives your stackup geometries
Anyone that’s ever tried to put 75-ohm video onto a PCB stackup knows how high impedance will drive layer thicknesses. Most busses operate using 50-60 ohm impedance, which means you would typically use dielectric thicknesses of around 5 mils to achieve those impedances. But 75-ohm video on a PCB requires dielectric heights more in the 8-10 mil range. Not a big deal, but those greater heights will … Read More
Tags: HyperLynx, impedance, differential, single-ended, stackup, route density, routing density