Improving signal integrity in differential signal systems

Details Improving signal integrity in differential signal systems Improving signal integrity in differential signal systems

2005-04-26

2005-04-26

Ray, Gopal C. (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C326S021000, C714S047300

Reexamination Certificate

active

06886065

ABSTRACT:
Over-terminating the differential mode impedance of a differential transmission line, such as an INFINIBAND™ cable, at the receiving end, improves the differential signal integrity for typical variations in termination network impedance component (e.g., resistor) and transmission line characteristics. Eye opening of the differential signal can be made larger with reduced attenuation but increased jitter compared to under-terminating the differential mode impedance. Because the differential signal quality (larger eye opening) is improved, data can be transmitted over a longer transmission line with the same transmitter and receiver.

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Hall, Stephen H., et al.,High-Speed Digital System Design A Handbook Of Interconnect Theory And Design Practices, 2 cover pgs., pp. 65-67 2000.
Kaufer, Steve, et al.,Terminating Differential Signals On PCBs, Printed Circuit Design, at pp. 25-28 (Mar., 1999).

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