IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Direct measurements of propagation delay of single-flux-quantum circuits by time-to-digital converters
Kazunori NakamiyaNobuyuki YoshikawaAkira FujimakiHirotaka TeraiYoshihito Hashimoto
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2008 Volume 5 Issue 9 Pages 332-337

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Abstract

Direct measurements of propagation delay of single-flux-quantum (SFQ) circuits were performed using SFQ double-oscillator time-to-digital converters. The propagation delay of several SFQ logic gates in our cell library named CONNECT were measured in picosecond resolution. Small discrepancy in the propagation delay of picosecond level was observed between measurement and circuit simulation results. The discrepancy is well explained assuming the parasitic inductance around shunt resistors of Josephson junctions.

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© 2008 by The Institute of Electronics, Information and Communication Engineers
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