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PCB Routing
Low Power Electronics: Do You Need a Battery to Keep Your Circuit Boards Online?
I was recently chatting with a friend of mine about his new hardware startup and how his progress on his new product was coming along. He was building a Bluetooth device and his first run at a prototype only kept his circuit board online for 40 minutes before draining the battery. I’ve noticed the difficulty of many IoT devices is that often they need to run for long periods of time. Whether it’s something you can wear or a sensor in a smart home
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Altium Designer 19 Sneak Peek
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Tips to Minimize the Effects of Differential Noise in RS485 Communication
I’ve never been a morning person and pride myself on simply getting dressed and making it to work on time. Although I typically beat the traffic and appear at the office just in time, there have been occasions when I’ve arrived wearing mismatched socks. In these situations, I walk straight to my desk and hope that my embarrassment stays unnoticed. In electronics, you might deal with a completely different type of embarrassment if you fail to keep
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How to Expand Input and Output for a Microcontrollers Circuit Board
When working through practice boards and schematics very early on in my education, I remember more than once thinking about simply increasing the board size so that I could fit my components properly and make routing easier. It definitely would not have helped, and I’m glad I persevered in finding solutions through the challenges, but there are still times in my career where I’ve looked at the necessities of devices and wished I could just make
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Trace Glossing
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Differential Pair Glossing
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Real Time Trace Corrections
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PCB Creativity and Training: Utilizing Creative Routing Solutions with Tight Component Placement
When I was working in a research lab and designing PCBs for our homemade optical systems, my layouts were down and dirty. We didn’t worry about little things like packaging, limited board space, or compact routing. We were happy as long as we could get all of the required components to appear on the board and eventually the board became a printed circuit. Once our microscope systems became more intricate, connecting our high speed, custom images
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HDI Design Support with Altium's Stackup Manager
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When to Prefer Longer PCB Traces Over Additional Vias
Whenever I go to buy a new big-ticket appliance, I always weigh my options. Sometimes I let this paralyze me, and I end up making a spending decision that I later regret. But it doesn’t have to be this way when deciding how to route signals in your next PCB. When you have many components and interconnects to place on your PCB, you need to weigh your options. Dense routing is as much an art as it is science, and having as much information as
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PCB Impedance Calculation and Cross Section Features in PCB Layout
When I first started laying out printed circuit boards, there wasn’t a lot of concern about controlled impedance routing. At that time, most everything was low speed and we were using larger traces and thru-hole vias for the simple four layer boards. That all changes once a board grows in speed, and changes demanded that we become more involved with the layer stackup design and specifying trace widths. At first we relied on board constraint
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Find Replacement Electronic Components With an Integrated Library
Much as we would like, designing a new product or system is not without its hiccups. Designs, functionality, and component changes may be made at the last minute, forcing design modification or component replacement. Replacement circuit components or replacement can require thorough knowledge of your circuit boards. Repairing a circuit board is often more than finding a circuit breaking. Electrical equipment and service panel tinkering can go so
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HDI PCB Designs and the CAD Tools Behind Them
Although it is said that the only guarantees in life are death and taxes, I would submit that the third guarantee in life is that electronic devices will continue to get smaller and smaller. I’m pretty sure that no one wants their cell phone to grow back to the size of a brick again, so to continue this path of ever decreasing sized electronics means that circuit boards need to shrink in size as well. The best way to do this is to use high
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All About Grounding in Electronics Design and PCB Layout
The concepts of grounding techniques, earthing, making PCB ground connections, and PCB chassis ground are all very convoluted in electronics, despite international standards that have tried to separate concepts and terminology. Grounding is important in every aspect of electronics design, electrical work, and of course, in PCB design. All circuits will need a reference connection, which is something that we call ground, but the exact reference is
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Eliminate the Crosstalk: LVDS Routing and the Art of Differential Signaling
During a typical baseball game, coaches use the silent language of hand signals to instruct batters and baserunners while catchers use similar signs to recommend pitches to pitchers. Players in the outfield and the infield use hand signals to find the right locations when anticipating the skills of a batter. Electronics has its own version of a silent language with the variety of signals exchanged almost instantaneously within a circuit. Single
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PCB Routing Tips: Navigating Your Way Through BGA Fanout Options
Tom rose through the ranks of his company to become the new vice-president. He had worked hard, forged relationships, and consistently built his knowledge about the company. Unfortunately, Tom also contracted a serious disease called acronymitis that spread like the plague throughout key sectors of the company. Try as he might, Tom could not resist speaking in acronyms. Sometimes, his wife would hear him talking in his sleep—in acronyms
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Termination Methods in High Speed and High Frequency PCBs
The topic of termination will inevitably come up when dealing with high-speed digital systems. Most digital systems have at least one standardized high-speed interface, or possibly fast GPIOs that produce fast edge rate signals. Advanced systems will have many standardized interfaces which also have termination applied, normally on the semiconductor die. If you determine that you actually need termination, what method should be used? As it turns
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