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High-Speed PCB Design
Simple solutions to high-speed design challenges
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High-Speed PCB Design
How Load Capacitance on a Transmission Line Affects Your Signals
If you ever read about transmission lines and integrated circuit datasheets, there is this seemingly mysterious quantity called load capacitance. This value depends on the geometry of the component lead connected to the transmission line, as well as the substrate material and distance to the reference plane on the integrated circuit die. When working with transmission lines, the load capacitance of a component has some important effects on signal
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Bob Smith Termination: Is it Correct for Ethernet?
Common-mode chokes in Ethernet circuits use Bob Smith termination, but is it the right choice for sinking common-mode noise?
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Back Drilling in Altium Designer: One of the Easiest Ways to Improve Signal Integrity
Back Drilling in Altium Designer is one of the Easiest Ways to Improve Signal Integrity. Click to see a Backdrilling example.
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Data Rate vs Bandwidth: What's the Difference?
What is the difference between data rate vs bandwidth? This topic has been obfuscated for the last 30 years. Here’s how they relate.
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Differential Pairs Without Ground: Is it a Problem?
Some designers tell you that differential pairs without ground are acceptable. So who’s correct? We’ll examine the pros and cons of a differential pair ground plane.
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What are Impulse Response Functions?
You can get a transfer function from a simulation, but what is an impulse response function? Learn more in this article.
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Through Thick And Thin — How Do You Get High Current Into a High Speed PCB?
The typical large currents in today’s high speed PCB designs require a different approach. This article will describe the stackup requirements associated with these very large current PCBs and how to design them so that they can be readily manufactured properly.
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Modeling PCB Interconnects as Causal Systems
Real PCB interconnects are causal systems and must be modeled with the correct time-dependent behavior.
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The Benefits of High-Dk PCB Materials
The terms “high-speed design” and “low-Dk PCB laminate” are often used in the same articles, and often in the same sentence. Low-Dk PCB materials have their place in high speed and high-frequency PCBs, but high-Dk PCB materials provide power integrity. Low-Dk PCBs are typically chosen as they tend to have lower loss tangent. Thus high-DK PCB materials tend to get overlooked for high speed and high-frequency PCBs. When we look at power integrity
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The Increasingly Important Role Of Dielectric Loss Tangent In PCB Laminates
Learn more about dielectric loss tangent, the role it plays in high-speed designs, and how it varies as a result of the glass to resin ratio and frequency.
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How to Calculate Impedance-Controlled Routing In Your PCB And Design Rules
Once you start designing high-speed or high-frequency PCBs, impedance in your traces becomes a critical parameter to consider during design. Impedance mismatches between signal sources, loads, and each trace that connects them can ruin a signal. Instead of working out the impedance of each trace in your PCB by hand, Altium Designer aids impedance-controlled routing with an integrated field solver. This streamlines your design process and ensures
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Learn How to Design PCBs with the Best PCB Design Tutorial
Let’s face it: PCB design is complex, and not all design software packages have the tools to help you be successful. Whether you’re creating a simple two-layer board or a complex high-speed digital system, Altium Designer has the design tools and PCB design tutorial you need to get started and succeed. You’ll have access to multiple PCB design tutorials to help you gain a better understanding of advanced features as you venture deeper into PCB
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What is Transfer Impedance in a PDN?
We often talk about impedance in a PDN, but we always refer to self impedance. Here’s what you need to know about transfer impedance in your PCB.
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The Basics of Signal Integrity Analysis in Your PCB
Read and learn the important steps in signal integrity analysis and how these steps reveal problems in your PCB layout.
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Rick Hartley's Books and Reading List
EMI & Noise Control Reading List PCB Design for Real-World EMI Control - Bruce R. Archambeault (Kluwer Academic Publishers Group) - ISBN 978-1-4757-3642-7 Principals of Power Integrity for PDN Design Simplified - Larry D. Smith & Eric Bogatin (Prentice Hall) - ISBN 978-0-13-273555-1 Electromagnetic Compatibility Engineering - Henry Ott (2nd Edition - John Wiley and Sons) - ISBN 978-0-470-18930-6 Digital Design for Interference Specifications- A
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DDR3 vs. DDR4 — Lots Of Memory At Very High Speed
When it comes to memory capacity and how it’s incorporated into the present day and next-generation design, much like every other aspect of high-speed design, it’s all about accessing large amounts of data at very high speeds. The evolution of double data rate (DDR) memory has been pretty dynamic over the years. The original DDR was first introduced in 1998 followed by DDR2 in 2003, DDR3 in 2007, DDR4 in 2014, and DDR5, which has an estimated
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Finding a PCB Electronic Search Engine for Your Component Needs
Maintaining proper components within your circuit board necessities becomes much easier when you have a real-time updating electronics search engine. ALTIUM DESIGNER PCB design software built for your electronic component search needs. When the time inevitably comes in every design journey, part data management will become a critical system that will require the utmost of ease and editability. Getting caught up in the manual editing web of part
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