In case you’ve labored with circuit simulation, you could have run into IBIS fashions. The acronym is enter/output buffer info, and whereas you are able to do loads with out having to cope with IBIS, realizing about it might assist you might have a profitable simulation.

IBIS is an industry-standard format that makes use of ASCII textual content to explain voltage versus present and voltage versus time about some system’s digital enter and output pins. This permits exact simulation with out revealing the system’s internals, which is essential to some distributors. The primary publish of this two-part collection talks about what IBIS is and the way it bought began. The second half explains creating and utilizing LTSpice to create your individual IBIS fashions. It additionally covers why you may wish to try this.

In fact, if you happen to don’t care about revealing the internals of a tool, you can simply create a Spice simulation. Nevertheless, many instruments will settle for each fashions, so it’s helpful to know the right way to produce both sort of mannequin. In truth, to create an IBIS mannequin, you’ll wish to use a Spice mannequin to generate the information for the IBIS mannequin, so it’s a good wager you’ll have each, even if you happen to select to solely publish the IBIS fashions.

In case you want a refresher on Spice, we have now a collection. In case you favor utilizing one thing completely different, strive Micro-Cap 12, which was industrial, however went free just a few years in the past.