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12.33. TRANSMISSION LINES. 12.35. DESIGN PCBs THOUGHTFULLY. 12.36. DESIGNNING+B46 CONTROLLED IMPEDANCE TRACES ON. PCBs. 12.36 the entire layout philosophy of a high performance mixed signal PCB design—as it well should. manufacturer in the form of computer CAD files (Gerber files).
This document embodies information originated and owned by Ford Motor Company. Reprint by permission. Printed copies are uncontrolled. Engineering Specification. PART NAME. PART NUMBER. EMC Design Guide for Printed Circuit Boards. ES-3U5T-1B257-AA. LET. A A A A A A A A A A A A A A A A A A A. FR. 1 2 3 4
General layout guidelines for printed circuit boards (PCB), which exist in relatively obscure documents, are summarized. Some guidelines apply specifically to microcontrollers; however, the guidelines are intended to be general, and apply to virtually all modern CMOS integrated circuits. This document covers most known
PART 2: COMPONENT SELECTION AND CIRCUIT DESIGN TECHNIQUES. Figure 2. Cost of EMC Measures. It is unlikely that EMC will be the primary concern when the designer first chooses the components, designs the circuit, and designs the PCB layout. But if the suggestions in this application note are kept in mind, the
Top 10 EMC design considerations. Page 1 of 4. Top 10 EMC Design Considerations. By Ashish Kumar, Product Engineer Sr and Pushek Madaan, Applications Engineer Sr, Cypress Semiconductor Corp. With the increasing demand for high-speed circuits, PCB design is becoming significantly more challenging. Along with
21 Jul 2000 PCB Design Techniques for EMC and Signal Integrity Short Course, 27-29. June, UW–Madison, Mark Montrose, Instructor. • Printed Circuit Board Design Techniques for EMC Compliance, Mark Mon- trose, 1996 IEEE Press. • Electronic Manufacturing, Sheldon Kohen and Michael Rose, 1982 Reston.
A textbook could be written about any one of the above topics (and many have), and this magazine article format merely introduces the various issues and points to the most important best-practice techniques. Signal integrity is treated as 'internal EMC'. Employing these well-proven techniques from the start of a new design
14 Dec 2009 www.cvel.clemson.edu/emc. • Our sagest mentors may not be able to help. • Nearly every rule of thumb is wrong. • To gain the skills needed, you have to actively seek them. • Industry conferences. ? PCB East and West. ? IEEE EMC Society events. • Seminars hosted by your favorite semiconductor
Avoid track stubs, these cause reflec- tion and harmonics (see figure 8). On sensitive components and termina- tions use surrounding guard ring and ground fill where possible (see figure 9). A guard ring around trace layers re- duces emission out of the board, only. EMC DESIGN GUIDELINES. PCB Considerations. LOCAL.
of power planes in PCB layout. Having established the paradigm that 'there is no substitute for a first principals understanding' the paper goes on to describe a number of good practice design rules with reference to real world examples. Introduction. If radio frequency (RF) design is voodoo then 'good'. EMC designs must
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