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SPICE: Certainty for All Decisions
Design, validate, and verify the most advanced schematics.
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Signal Integrity
DDR3 Memory Interfaces and Topologies in PCB Design
In the World Memory Championships, individuals compete in memory sports by memorizing as much information as possible within a specific timeframe. The championships include ten different disciplines that cover numbers, binary digits, playing cards, random lists of words, names and faces, historic dates, abstract images, and speed cards. No one has tested the World Memory Champion against DDR3 memory and no one really knows how the World Memory
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Signal Integrity Expert Eric Bogatin on Best Measurement Practices
Signal integrity expert, Dr. Eric Bogatin, shares how best measurement practices helps in getting the design right the first time. Watch and learn from this OnTrack Podcast episode now!
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Comparator Propagation Delay in High Speed Mixed-Signal Design
When I began my journey into the wonderful depths of electronics so long ago as a student, I wondered how so many interesting and important functions are built into everyday electronic devices. Input signal and voltages were fresh in my head and I was worrying more about a power supply than inverting inputs. It wasn’t until later that I started to fully understand the versatility of op-amps and how they could be used to build comparators
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No Last Calls Here: PCI Express Routing and Layout Schematics
The mere mention of the “Orient Express” conjures up images shrouded in mystery and intrigue. Spies often conducted their business during the 80-hour trip from Paris to Constantinople. Kings rode living and sleeping cars rivaled Europe’s finest hotels with wooden paneling, silk sheets, and deluxe leather armchairs. PCI Express does not have the same aura as the “Orient Express” but does allow the high bandwidth communication between devices
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Crosstalk in Mixed-Signal PCB Traces and Ground Planes
Learn how to suppress mixed signal crosstalk and EMI in PCBs with the right ground and power plane arrangement.
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PCB Design Guide to Controlled Impedance During PCB Routing
In June 1831, Sir James Clark Ross discovered the North Magnetic Pole on the Boothia Peninsula in Northern Canada. While the term “discovery” seems to indicate that the North Magnetic Pole is static, the North and South Magnetic Poles, in fact, move continuously. The Earth’s magnetic field changes over time and as those changes occur, the positions of the poles also shift. Given the rate of movement at 55 km per year, we may have another meaning
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Simulation Driven Design Can Solve Your PCB’s Signal Problems and More
If you work in the electronics industry or in research, there’s a chance that simulations are a regular part of life. Simpler systems can be designed with intuition and simulated after designs are completed, but more advanced systems running at high frequencies or very high data rates need qualification before and after a PCB layout is complete. Simulation software has to take a more prominent role in PCB design for many advanced systems
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PCB Ground Plane Design in High Performance Boards
Learn the best PCB ground plane design techniques to prevent signal and power integrity problems in this article.
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Use Interactive Routing to Mitigate EMI Issues from High-Speed PCB Traces
Having a robot clean the house and perform laundry chores continues to elude modern technology given intricate steps to complete each chore. Given the repetitive nature of the chores, you’d think robotic automation would be the perfect application to turn over to a robot. It turns out that cleaning the house and doing the laundry is much more complicated and too advanced for robot understanding. Only simplistic chores, like vacuuming the floor
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IoT Medical Product and Application Design: Challenges and Considerations
Ideally, any technology is going to drastically affect people and the ability of people to accomplish whatever tasks they need. Yet, when new technology is entering the medical domain, the stakes are always a bit higher: one has to be cognizant that any faults, errors, or malfunctions are going to immediately affect someone’s health. Granted, not every medical device is going to be life-or-death, but they should still be considered carefully
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PCB Routing Guidelines for DDR4 Memory Devices and Impedance
Follow these DDR4 routing and PCB layout guidelines to ensure signal integrity and correct timing for high speed DDR buses.
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Analog Meets Digital: How Converters Can Make or Break Signal Performance
We are born into a world of purely analog signals. The sound of a stream running through a mountain meadow, the brown color of dirt, that screaming baby next to you; all of these ‘signals’ are of an analog nature. Yet, we grow up and seem to spend most of our time attempting to turn these signals into a reproducible ‘digital’ copy so we can perceive them through a digital device. Analog and digital signal performance is necessary to keep in mind
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PCB Component Noise Reduction with Linear Devices in Electronics
When I first got into electronics and PCB design as a student, I had the idea that noise suppression required a lot of elaborate (and expensive) equipment. I had visions in my mind of building complicated mainframe-style systems for the sole purpose of coaxing the perfect signal from a device. Sure, you can go that route if you like. But like many aspects of engineering, the best solution is often the simplest. Most PCB designers are considering
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Choosing the Right RFID Card Technology For Your Embedded System
As a pure introvert who fears small talk, I absolutely dread networking events. Besides maintaining endless empty chatter with strangers, picking out the best attire is challenging, especially considering my dreadful fashion sense. Thankfully, I’m much better at choosing the right type of Radio Frequency Identification or RFID card technology for my embedded system projects. What is an RFID Card? In the simplest sense, an RFID card is a token
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Keep the Petals on: Optimizing Daisy Chain Wired Communication
As a child, I was fascinated by trains. I remember staring down an empty railway for hours, simply waiting for a train to pass by. From my youthful perspective at the time, it was magical how the train never fell off the track despite essentially being a moving chain consisting of many . Although I eventually outgrew my obsession with trains, I became enamored by the daisy chain style of wiring for communication in electronics. As my career as an
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How to Interface an LED With an 8051 Microcontroller: Processes and Applications
When my professors saw my first electronics project, they weren’t too hopeful about my future as a design engineer. With hundreds of jumper wires clumsily soldered onto a prototyping board, my feeble attempt at making a ham radio barely passed as a joke. I was learning about the dot matrix, pic microcontroller, and RGB LED lights. Everyone has to start from the beginning! Thankfully, I’ve come a long way since those days. If you’re starting your
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Avoid Signal Integrity Loss While Using a Fanout Strategy in Your PCB
When I was much, much younger, I looked at the pin layout on the back of a processor and wondered how anyone can possibly route all of those electrical connections on a PCB. I didn’t know much about signal integrity, of fanouts on PCBs then but fast forward fifteen years and now I get to layout those traces on PCBs. Fanout is a technique where short traces and vias are used to connect inner rows of pins on high pin-count ICs. Fanout can also
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