Altium designer contains all of these features and many more in a unified, rulesdriven design platform. This section looks at some key fundamentals of high speed pcb layout techniques so. Useful book for pcb design electrical engineering stack. Emphasizes designing high speed backplanes, driving cabling, bus architecture and topology. This application report addresses highspeed signals, such as clock signals and. Best practices for high speed digital pcb design 1. A practical guide to highspeed printedcircuitboard layout. High speed analog design and application seminar 51 texas instruments section 5 high speed pcb layout techniques scenario. Highspeed digital circuit design and applications this course covers the electrical design principles associated with high speed digital pcb design and layout. Where r dielectric constant, o permittivity of empty space f m, permittivity fm. Design consideration high speed layout design guidelines application note, rev. A circuit trace routed on an outside layer of the pcb with a reference plane. Reference the book entitled highspeed digital design a. Terminator type, terminator placement and net sequencing chapter 22.
And if you need to incorporate specific technologies onto your layout, like hdmi, pci express, usb, or sata, then know youll be dealing with high speed design constraints. Teaching by example, the authors cover ringing, crosstalk, and radiated noise problems which commonly beset highspeed digital machines. The basic definition of a transmission line is a signal and its return path, and the return current clarifies a consideration in the stack up of the layers of a high speed board. Use a ferrite core on the dc power cord to reduce emi. Controlling reflections by using terminations chapter 21. A practical guide to highspeed printedcircuitboard layout author. A practical guide to high speed printedcircuit board layout by john ardizzoni john. The goal in packaging is to transfer a signal from one. Switching edges are in the 200ps to 300ps range and some devices have edges that reach 17ps. Right the first time, a practical handbook on highspeed pcb. Good book, at least to me, need a registration though, but free for entire book approx. Follow the guidelines to layout differential pairs, the ground plane, and highspeed signals. Current highspeed designs demand a board designers extensive knowledge of these issues. Guidelines for designing highspeed fpga pcbs intel.
Properties of transmission lines that affect impedance chapter 24. Place highspeed via transitions as one entityis a whole lot faster to add and manage in design reuse in same design or another database via structures stay together during placement and interactive editing so they can never be unintentionally altered to ensure the design intent always remains intact reuse multiple times. When designing a circuit with a ball grid array bga that has 100 or more pins a 4 layer. A practical guide to highspeed printedcircuitboard layout by john ardizzoni john. Whether youre new to pcb design or are an experience electrical engineer interest in improving your design quality, this introduction to printed circuit board design guide will provide you with the basic circuit board design rules and sound practices to tackle common design challenges and ensure your next pcb project will be a success. System speeds of 150 mhz and higher have become common for digital logic. For a certain trace length, the signal needs a certain time to pass it, and this is called the propagation delay time.
Design rule checks for highspeed pcb design 20171019. Printed circuit board design rules and pcb layout guidelines become more complex as the number of layers in your stackup increases. Our weekly design enewsletter focuses on pcb design. Proper pcb design is very often an integral part of a design. Circuit board pcb design gets more and more di cult. Todays board design is not as simple as it was in the past. The design of the printed circuit board can be as important as the circuit design to the overall performance of the final system. You hand the schematic to your layout person who puts all. Each chapter in this book treats a specialized topic having to do with highspeed digital design. Design guide for highspeed controlled impedance circuit boards 1 scope this guide is intended to be used by circuit designers, packaging engineers, printed board fabricators, and procurement personnel so that all may have a common understanding of each others area.
Pcb design rules for analog circuits blog altium designer. Top 5 pcb design guidelines every pcb designer needs. Designexamples,signalingandmemory technologies, fiberoptics. Pvt corners and input topology fast n, weak p, high vdd, high t. To filter highfrequency noise at the device, altera recommends placing decoupling capacitors as close as possible to each vcc and ground pair. This is one of many important 2 layer pcb design rules. Understanding pcb layout essential change the way how you look at the tracks duration. Association connecting electronics industries design guide. High speed design rules are presented for both engineering design and printed circuit board layout. Comprised of a sandwich of one or more insulating layers and one or more copper layers which contain the signal traces and the powers and grounds, the design of the layout of printed circuit boards can be as demanding as the design of the electrical circuit.
Wadell artech house publishers isbn 0890064369 hf filter design and computer simulation randall w. Guidelines for designing high speed fpga pcbs timedomain reflectometry figure 2. One of the speakers at 2011 freescale technology forum about high speed pcb design gave a list of books to read, which ive listed on amazon. This paper focuses on the subsystem of highspeed digital pcb design and outlines an interdisciplinary and concurrent design methodology, enabled and supported by a comprehensive set of cadence tools introduced as the allegro system interconnect design platform. Pcb and high speed serial interface hssi design guideline.
The designer also needs to be an expert concerning board material, signal and power stacking, connectors, cables, vias, and trace dimensions. Jan 19, 2015 understanding pcb layout essential change the way how you look at the tracks duration. Dfm for high speed design printed circuit boards ebook tempo. Choose a metal box to shield the printed circuit board. This document is a guideline for printed circuit board pcb layouts and designs associated with highspeed systems. The basic definition of a transmission line is a signal and its return path, and the return current clarifies a consideration in the stack up of the layers of a highspeed board. Bringing a highspeed design to manufacture often reveals dfm constraints that could trap you in a build with long lead times, high costs, or even prove to be unmanufacturable. Pcb and high speed serial interface hssi design guidelines ap32174 high speed board design application note 7 v1.
Their common goal is to make a product with the right quality at the right price. Right the first time, a practical handbook on highspeed. The speed of todays logic devices mandates that the interconnect on pcbs must meet the high switching risefall times of these devices. Handbook of digital techniques for highspeed design. This separation is too great for full realization of some of the benefits listed above. Patrick carrier is the engineering planning manager for the mentor board systems. In many designs high speed digital, low level analog and rf to name a few the pcb layout may make or break the operation and electrical performance of the design. General rules place components so as to avoid long loop traces.
New techniques to address layout challenges of high speed. Rules related to the contention current in the inverting buffers zongjian chen ee371 lecture 10 12 keeper sizing for leakage fighting part of dynamic node signal degradation budgeted for leakage fighting need to consider the worst case. Highspeed design designexamples,signalingandmemory technologies, fiberoptics, modelingand simulationto ensuresignalintegrity tomgranberg, ph. It highlights and explains analog circuit principles relevant to high speed digital design. Highspeed design rules are presented for both engineering design and printed circuit board layout. There seems to be a large wealth of circuit design books, books about rf pcb design, and books dealing with highspeed digital design. It highlights and explains analog circuit principles relevant to highspeed digital design. Placing the power and ground planes in parallel and separated by. Emphasizes designing highspeed backplanes, driving cabling, bus architecture and topology. The following books were used as reference in writing this application.
Pdf design and construction of high speed, hard chine. Design and construction of high speed, hard chine planing hull conference paper pdf available august 20 with 4,654 reads how we measure reads. Filtering noise with a ferrite bead pcb elements add highfrequency noise to the power plane. If your component placement forces horizontal trace routing on one side of the board, then always route traces vertically on the opposite side. If youre designing a motherboard, cell phone board, or dsl router board, then youll 100% be working on a high speed project. Four or more layer pcb design for beginners using eagle. Introduction over the past five years, the develo pment of true analog cmos processes has led to the use of highspeed analog devices in the digital arena. A successful product depends on an intimate cooperation between specialists from many fields.
The dielectric constant is the permittivity of a relative to that of empty space i. It was written by speeding edge founder and president, lee w. Because the rise time of the pulse sent for tdr analysis is very small around 20 ps, the tdr voltage plot shows every disc ontinuity on the transmission path. Discusses ibis and spice modeling, simulations, design processes, and over 30 design automation tools. If youre interested in learning more about altium, you can download a free trial and get access to the industrys best layout, routing, and simulation features. The return current flows, whether we design a place for it to go or not, so it is best to design always that place by having a plane next to the signal layer. High speed layout design guidelines application note, rev. Chapters introduce analog circuit terminology, the highspeed properties of logic gates, and standard highspeed measurement techniques, respectively. And if you need to incorporate specific technologies onto your layout, like hdmi, pci express, usb, or sata, then know. If there are highspeed currents on the board, there are electromagnetic. High speed board design techniques application note advanced micro devices introduction the most important factor in the design of many systems today is speed. Our weekly design enewsletter focuses on pcb design topics, including special columns and other unique editorial.
It provides solutions to successfully handle the very fast edges, low noise margins, and other nonideal characteristics of todays digital devices including signal and power. You have spent several days, no maybe weeks, perfecting a design on paper and also using spice to ensure the design exceeds all expectations. Executive summary electronics miniaturization, nanometer silicon, multigigabit serial interfaces, mixedsignal devices, and systemlevel design are creating new challenges for the engineering community. Right the first time, a practical handbook on high speed pcb and system design, volume 1, is the premier publication of speeding edge. Ritchey, coauthored by john zasio, an recognized industry expert in highspeed design, and edited by kella j. Top pcb design guidelines for pcb designers pcb design. Teaching by example, the authors cover ringing, crosstalk, and radiated noise problems which commonly beset high speed digital machines. Fix the printed circuit board pad to hole ratio and size at the beginning of the pcb design it will be necessary to determine the pad and hole dimensions.
Tdr voltage plot with cable connected to pcb figure 3 shows an expanded curve for the sma connector. Buy where you want to, its just a convenient way to make lists like this. There seems to be a large wealth of circuit design books, books about rf pcb design, and books dealing with high speed digital design. There is one additional circuit component that must be considered for the design to be a success the printed circuit board on. A high frequency signal that propagates through a long line on the pcb from driver to receiver is. Lt journal archive technical articles technical books faqs videos webcasts application notes.
Transmission line is a trace, and has a distributed mixture of resistance r, inductance l, and capacitance c. Pcb design tutorial pcb design software ib friedrich. Section 5 high speed pcb layout techniques texas instruments. High speed layout design guidelines nxp semiconductors. Let mindshare bring highspeed design to life for you. You will also be notified of updates and additions to the book as they become available. Each pcb substrate has a different relative dielectric constant. Highspeedboard design techniques application note advanced micro devices introduction the most important factor in the design of many systems today is speed. This allmandarin newsletter featuring global news is sent weekly to board fabricators in china. Table of contents rules of play game design fundamentals1. A practical handbook on high speed pcb and system design edit. Pcb basic design rules 102019 multicb leiterplatten.
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