Electronic digital logic circuitry – Superconductor – Tunneling device
Reexamination Certificate
2009-08-04
2010-10-19
Le, Don P. (Department: 2819)
Electronic digital logic circuitry
Superconductor
Tunneling device
C326S006000
Reexamination Certificate
active
07816940
ABSTRACT:
Supercooled electronics often use Rapid Single Flux Quantum (RSFQ) digital circuits. The output voltages from RSFQ devices are too low to be directly interfaced with semiconductor electronics, even if the semiconductor electronics are cooled. Techniques for directly interfacing RSFQ digital circuits with semiconductor electronics are disclosed using a novel inverting transimpedance digital amplifier in conjunction with a non-inverting transimpedance digital amplifier to create a differential transimpedance digital amplifier that permits direct interfacing between RSFQ and semiconductor electronics.
REFERENCES:
patent: 5233243 (1993-08-01), Murphy et al.
patent: 2010/0033252 (2010-02-01), Herr et al.
Gupta Deepnarayan
Inamdar Amol
Hoffberg Steven M.
Hypres, Inc.
Le Don P.
Ostrolenk Faber LLP
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