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Try to fit some plane pairs in your stackup

Try to fit some plane pairs in your stackup

At the very minimum, a good board stackup has solid reference planes for signal routing.  Power demands now pretty much…

High impedance drives your stackup geometries

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. …

Stackups: More than just a bunch of routing layers

Stackups: More than just a bunch of routing layers

Proper stackup design is the key to ensuring maximum performance for your PCB design.  Electromagnetic compatibility, signal integrity, power integrity…

The length of your terminator doesn’t matter

The length of your terminator doesn’t matter

Many designers go to great lengths to make sure they do appropriate length-matching, even to the level of including the…

Vias are longer than their length

Vias are longer than their length

Yeah, that’s what I said.  Vias are longer than their length.  Phrased more appropriately, the delay introduced by a via has…

How do you manage your trace lengths?

How do you manage your trace lengths?

Too often I see people just using straight length to manage their board timing.  Or take it one step further…

S-parameters are for more than just packages

S-parameters are for more than just packages

In the digital design world, we have typically only seen S-parameters used to model packages.  They are a popular output…

Making SERDES sims faster with IBIS-AMI

Making SERDES sims faster with IBIS-AMI

You may have heard lately about IBIS-AMI models, which are being used more often for SERDES simulation.  IBIS-AMI stands for I/O…

Tired of waiting for your SPICE to finish?

Tired of waiting for your SPICE to finish?

Anyone who has ever had to simulate a SERDES interface knows how long it take to run a couple hundred…