A single QFP timing discriminator

Author

Ho, H.L. ; Lee, G.S. ; Ruby, R.C. ; Barfknecht, A.T.

Author_Institution

Hewlett-Packard Lab., Palo Alto, CA, USA

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

2756

Lastpage

2759

Abstract

A root-mean-square (RMS) time jitter of 380 fs has been demonstrated in a single quantum flux parametron (QFP) race arbiter circuit with approximately 60-ps-risetime signal inputs. Because of the simple relationship between the QFP current comparator and the race arbiter, it is possible to make direct comparison of the time jitter and current noise results. The measured current noise in a QFP current comparator implies that, for a signal risetime of 10 ps, a time jitter of approximately 200 fs is expected for this race arbiter circuit. Circuit modeling suggests that an optimized design can achieve approximately 100-fs time jitter.<>

Keywords

discriminators; electron device noise; equivalent circuits; superconducting integrated circuits; superconducting junction devices; QFP timing discriminator; RMS; circuit modelling; current comparator; current noise; race arbiter circuit; root-mean-square; single quantum flux parametron; time jitter; Circuit analysis; Circuit noise; Coupling circuits; Electronics packaging; Equivalent circuits; Laboratories; SQUIDs; Semiconductor device noise; Superconducting device noise; Timing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233510

Filename

233510