Simulations should match measurements. Otherwise, what good are they? When doing signal integrity simulations, that starts with comprehensive stackup modeling. …
At the very minimum, a good board stackup has solid reference planes for signal routing. Power demands now pretty much…
Anyone that’s ever tried to put 75-ohm video onto a PCB stackup knows how high impedance will drive layer thicknesses. …
Proper stackup design is the key to ensuring maximum performance for your PCB design. Electromagnetic compatibility, signal integrity, power integrity…
Many designers go to great lengths to make sure they do appropriate length-matching, even to the level of including the…
Yeah, that’s what I said. Vias are longer than their length. Phrased more appropriately, the delay introduced by a via has…
Too often I see people just using straight length to manage their board timing. Or take it one step further…
In the digital design world, we have typically only seen S-parameters used to model packages. They are a popular output…
You may have heard lately about IBIS-AMI models, which are being used more often for SERDES simulation. IBIS-AMI stands for I/O…
