Greg Papandrew on the Need to Train Buyers

Created: May 21, 2019
Updated: March 16, 2020

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length tuning impedance

What is the Impedance of Length-Tuning Structures? Length tuning impedance is difficult to calculate, but you can minimize the impact of length tuning structure impedance deviations with some simple differential pair design strategies. Read Article

Pin-Package Delay and Via Delay

Pin-Package Delay and Via Delay in High Speed Length Tuning Take a look at the inside of some integrated circuit packages, and you’ll find a number of wires bonded to the semiconductor die and the pads at the edge of the component's package. As a signal traverses makes its way along an interconnect and into a destination circuit, signals need to travel across these bond wires and pads before they are interpreted as a logic state. As you look around the edge of an IC, these bond wires can have different Read Article

differential pair impedance calculator

Differential Pair Impedance: Using a Calculator to Design Your PCB Do you know what to look for in your differential pair impedance calculator? We've compiled the important information you need to know in this short guide. Read Article

pcb via size

PCB Via Size and Pad Size Guidelines Do you know what PCB via size you should use in your PCB layout? We’ll look at a few simple ways to answer this question. Read Article

Reduce copper losses

Recover Conductor Losses By Clearing Your PCB Ground Layer Need to recover some conductor losses? Here’s how clearing out your ground plane near an I/O or connector can help. Read Article

Differential Impedance Specification

How to Design to a Differential Impedance Specification Differential impedance is sometimes misunderstood and it depends on multiple factors. Learn more about trace width design needed to reach a specific differential impedance target. Read Article

Differential Pair Spacing

Should You Use Tight vs. Loose Differential Pair Spacing and Coupling? We get a lot of questions about trace impedance and how to calculate the right trace size to hit a specific impedance in a manufacturable PCB. Just as important as determining an appropriate trace width for a single-ended trace is determination of an appropriate spacing between two traces in a differential pair. So the question is, how close do the traces in a differential pair need to be to each other, and is the need for “tight coupling” really Read Article

microstrip to ground clearance

Microstrip Ground Clearance Part 2: How Clearance Affects Losses In a previous article, I provided a discussion and some simulation results on the necessary clearance between impedance controlled traces and nearby grounded copper pour. What we found was that, once the spacing between the pour and the trace becomes too small, the trace becomes an impedance-controlled coplanar waveguide (with or without ground). We also saw that the 3W rule for the spacing between the trace and the grounded copper pour is a bit Read Article

Differential Pairs and Differential Signals

What Are Differential Pair Signals? Differential pairs and differential signaling are the mainstay of high speed digital communication and data transfer. Read Article

PCB routing

What is PCB Routing? Learn about PCB routing techniques and how to design traces to proper routing in any device. You can access the best PCB routing features in Altium Designer. Read Article

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