Practical Guide to High Speed PCB Layout Analog Devices.pdf

ground, analog, digital, and RF); which signals need to be on each
A Practical Guide to High-Speed layer; where the ponents need to be located; the exact
location of ponents; which traces are critical; which
Printed-Circuit-Board Layout lines need to be controlled-impedance lines; which lines need to
By John Ardizzoni [@] have matched lengths; component sizes; which traces need to kept
away from (or near) each other; which circuits need to be kept away
Despite its critical nature in high-speed circuitry, printed-circuit- from (or near) each other; ponents need to be close to (or
board (PCB) layout is often one of the last steps in the design away from) each other; ponents go on the top and the
process. There are many aspects to high-speed PCB layout; bottom of the board. You’ll never get plaint for giving someone
volumes have been written on the subject. This article addresses too much information—too little, yes; too much, no.
high-speed layout from a practical perspective. A major aim is to
help sensitize ers to the many and various considerations A learning experience: About 10 years ago I designed a
they need to address when designing board layouts for high-speed multilayer surface-mounted board—ponents on
circuitry. But it is also intended as a refresher to benefit those both sides of the board. The board was screwed into a gold-
wh