Definition:

Electrical Signal Integrity (ESI) : Technology to increase the signal quality by reducing the noise from the imperfection of electrical  signal carrier. e.g. E-field of electromagnetic waves in waveguide, continuous wave in the air, ...

ESI requires the understanding of transmission line theory (Telegrapher's equation) and IO buffer technology or driver/receiver technology. Recent technology has been driven to develop computer aided tools to simulate the massive signal interfaces to verify electronic system design. A new standard of IO buffer model for the efficiency of design process has been developed called IBIS. SPICE and conventional RF design concept and tools could be also used in parallel with this model.    More...