Technology Related Timing Jitter in Superconducting Electronics

Digital superconducting systems based on Josephson junctions make generally use of the synchronous timing strategy. Today, one of its most promising applications is the high speed and high dynamic range signal sensing. A digital signal acquisition system should have a high resolution as well as a sh...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2007-06, Vol.17 (2), p.534-537
Main Authors: Ortlepp, T., Uhlmann, F.H.
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Bit-error-rate
Circuit noise
Circuit properties
Clocks
Design. Technologies. Operation analysis. Testing
Digital
Digital circuits
Dynamic range
Dynamical systems
Dynamics
Electric, optical and optoelectronic circuits
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Fluctuations
Integrated circuits
Josephson junctions
noise
Sampling methods
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal resolution
Studies
Superconducting device noise
Superconducting devices
Superconducting transmission lines
Superconductivity
Superconductors
Timing jitter
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Summary:Digital superconducting systems based on Josephson junctions make generally use of the synchronous timing strategy. Today, one of its most promising applications is the high speed and high dynamic range signal sensing. A digital signal acquisition system should have a high resolution as well as a short sampling interval with a well known and constant time period. Short term clock fluctuations (clock jitter) induced by thermal noise can significantly disturb the system operation due to hazards of timing constraint violations. This uncertainty in the time period is currently a strong limitation for further improvements of fast signal sensing systems based on superconductive electronics. Recently, several theoretical and experimental studies describe the timing jitter in simple circuits, like Josephson transmission lines. In the presented work, we analyse different fabrication technologies for rapid single flux quantum (RSFQ) electronics and predict their timing jitter by the numerical solution of stochastic differential equations. We obtained a very good agreement between our simulation data and recent experimental results.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2007.901334