Numerical Study of the Effect of Parasitic Inductance on RSFQ Circuits

摘要

We have quantitatively and systematically in- vestigated the effect of parasitic inductance on rapid single flux quantum (RSFQ) circuits by numerical simulation. While a par- asitic inductance in parallel to a junction has virtually no ef- fect on the circuit performance, a parasitic inductance in series with a junction significantly reduces the operating margins and speeds of circuits that have been optimized with the assump- tion that not parasitic inductance exists.