IPC-2141A (PDF) Single User
Design Guide for High-Speed Controlled Impedance Circuit Boards
Englisch. 53 pages. Stand: März 2004. Keine Druckberechtigung, DRM-Schutz
Controlled impedance is the maintenance of some specified tolerance in the characteristic impedance of an interconnect line (transmission line) that is used to connect different devices on a circuit. Controlled impedance is often a design considerati on for high-speed digital or high-frequency analog circuits. This guide is intended to be used by circuit designers, packaging engineers, printed board fabricators, and procurement personnel. Enhancements within Revision A include expanded data for l ogic families, updated equations for unbalanced lines, new equations for balanced line configurations, and detailed comparisons between capacitive lines and transmission lines, including propagation within transmission lines. 53 pages.