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Electronic Systems Design

Can you make Z higher?

August 02, 2011

Simulations should match measurements. Otherwise, what good are they? When doing signal integrity simulations, that starts with comprehensive stackup modeling. ...

By Patrick Carrier

Electronic Systems Design

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...

By Patrick Carrier

Electronic Systems Design

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. ...

By Patrick Carrier

Electronic Systems Design

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...

By Patrick Carrier

Electronic Systems Design

The length of your terminator doesn't matter

January 28, 2011

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

By Patrick Carrier

Electronic Systems Design

Vias are longer than their length

January 27, 2011

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

By Patrick Carrier

Electronic Systems Design

How do you manage your trace lengths?

January 25, 2011

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

By Patrick Carrier

Electronic Systems Design

S-parameters are for more than just packages

January 14, 2011

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

By Patrick Carrier

Electronic Systems Design

Making SERDES sims faster with IBIS-AMI

January 13, 2011

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

By Patrick Carrier