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SPICE: Certainty for All Decisions
Design, validate, and verify the most advanced schematics.
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Signal Integrity
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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Bandwidth Requirements For Single-Ended vs. Differential Signals
This article provides an overview of the benefits of differential signaling and how it operates in a working electronic product.
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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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Using Cellular Modules for Internet of Things Devices and Design
Cellular internet of things products are widely accessible and easy to design thanks to standard cellular modem modules and transceiver components.
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Determining the Parasitic Inductance of a DC to DC Converter
Unwanted parasitic inductance from capacitors and transformer leakage inductance in DC/DC converters cause power instability in digital systems. Here's how you can determine parasitic inductance in your power system.
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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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Using Altium Designer for the Cellular Industrial IoT
Industrial IoT can benefit hugely from cellular connectivity, and new cellular IoT hardware solutions are making it easy for innovators to build new products.
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Oscilloscope Basics: A Beginner's Guide
Wondering how to use an oscilloscope? Read this guide from Mark Harris to learn more about some oscilloscope basics for new electronics engineers.
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CAN-Bus: Introduction and History
Take a look at our controller area network bus introduction. You'll learn about the history of CAN buses, their purpose, and how they were created.
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How Material Characteristics Factor into High Speed PCB Signal Performance
Evaluating laminates for a particular PCB implementation can be a complex, multilevel process , especially when it comes to the operation of key components on the board, such as high-speed differential pairs. This article will examine some of the factors that come into play with the evaluation process: materials with a low dielectric content versus materials that are low loss; comparing the advantages and disadvantages of each of them; taking
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EMI Case History — Noise Problems and Their Solutions — Part 2
In Part 1 of this article , I described an EMI noise problem occurring in a LCD touch screen display of an autonomous robot cleaning machine. In order to provide consulting services we needed to solve a problem which originated because of the ground and supply bounce in the leads of the IC devices that were incorporated into that display. In Part 1, I also described the type of equipment in which the operation problem arose, the origin of the
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Modeling Copper Foil Roughness Factor in Altium Designer's Impedance Profiler
Advanced transmission line models for long interconnects require that designers include copper foil roughness calculations in order to determine accurate impedance. Without the right models or design software, you’ll be left to estimate the skin effect impedance, dispersion, and parasitics in your PCB. These models can be difficult to work with by hand if you’re not mathematically inclined, but the right design tools can be used to quickly
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GNSS + LTE Asset Tracker Project, Part 1
In this week’s project, I’m building an LTE-based asset tracking system that could be used for a range of objectives, such theft prevention (and recovery), delivery or transit vehicle tracking, as well as predictive maintenance if data that is collected is paired with a suitable machine learning service. All of my previous projects have been two layer boards without any space constraints, but I miss building really compact high density circuit
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Power Delivery Systems Design
This article is intended to define the new challenges and provide guidance in how to successfully engineer the Power Delivery System (PDS) so it meets the needs of new technologies. As integrated circuit technology allows for billions of transistors on a single IC, it has resulted in very powerful systems on a chip. This has made it possible to put the equivalent of supercomputers inside video games, cell phones, and a host of other products that
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Bluetooth 5.1 SoC vs. Module: Which is Best for Your Design?
The list of features available in Bluetooth just got a little longer since the release of Bluetooth 5.1. Component manufacturers have taken this mobile technology to the next level for IoT devices by integrating wireless comms with an MCU for embedded processing. This is just another step in the continuous push to pack more functionality into a smaller footprint. If you want to incorporate a Bluetooth 5.1 SoC into your new product, you have two
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How Copper Foil Roughness Affects Your Signals and Impedance
The history of engineering, both electrical and mechanical, is littered with approximations that have fallen by the wayside. These approximations worked well for a time and helped advance technology significantly over the decades. However, any model has limits on its applicability, and the typical RLCG transmission line model and frequency-independent impedance equations are no different. So what’s the problem with these equations? Senior PCB
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