We designed and tested low-power digital gates based on the energy-efficient rapid single flux quantum (ERSFQ) and on the reversible nSQUID logic. The ERSFQ circuit consists of a series of 13 toggle flip-flops (TFFs), where the bias resistors are replaced by inductors which generate no energy dissipation in the static mode, resulting in a power consumption orders of magnitude below that of traditional RSFQ circuits during operation. The ERSFQ circuits were fabricated with HYPRES’ standard 4.5-kA/cm2 process and tested up to 20 GHz. The RF input level was about −25 dBm 50 Ω matched, and the output level was 400 μVpp. The nSQUID ring with “NOT” gates was fabricated with HYPRES’ standard 1-kA/cm2 process. The “0” and “1” input logic signals were realized injecting ±5 mA of current in a superconductive coil, obtaining 6 μVpp of amplitude as output signal. The test was performed at low frequency in order to verify the functionality and the ultralow power consumption.

Lucci, M., Ren, J., Sarwana, S., Ottaviani, I., Cirillo, M., Badoni, D., et al. (2016). Low-Power Digital Gates in ERSFQ and nSQUID Technology. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 26(3), 1-5 [10.1109/TASC.2016.2535146].

Low-Power Digital Gates in ERSFQ and nSQUID Technology

Lucci M.;Ottaviani I.;Cirillo M.;
2016-04-03

Abstract

We designed and tested low-power digital gates based on the energy-efficient rapid single flux quantum (ERSFQ) and on the reversible nSQUID logic. The ERSFQ circuit consists of a series of 13 toggle flip-flops (TFFs), where the bias resistors are replaced by inductors which generate no energy dissipation in the static mode, resulting in a power consumption orders of magnitude below that of traditional RSFQ circuits during operation. The ERSFQ circuits were fabricated with HYPRES’ standard 4.5-kA/cm2 process and tested up to 20 GHz. The RF input level was about −25 dBm 50 Ω matched, and the output level was 400 μVpp. The nSQUID ring with “NOT” gates was fabricated with HYPRES’ standard 1-kA/cm2 process. The “0” and “1” input logic signals were realized injecting ±5 mA of current in a superconductive coil, obtaining 6 μVpp of amplitude as output signal. The test was performed at low frequency in order to verify the functionality and the ultralow power consumption.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - Fisica della Materia
English
Con Impact Factor ISI
Digital gates, energy-efficient rapid single flux quantum (ERSFQ), low power, niobium, nSQUID, superconductor, T flip-flop.
Lucci, M., Ren, J., Sarwana, S., Ottaviani, I., Cirillo, M., Badoni, D., et al. (2016). Low-Power Digital Gates in ERSFQ and nSQUID Technology. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 26(3), 1-5 [10.1109/TASC.2016.2535146].
Lucci, M; Ren, J; Sarwana, S; Ottaviani, I; Cirillo, M; Badoni, D; Salina, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/206153
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