Design and low speed testing of a four-bit RSFQ multiplier-accumulator

Q.P. Herr , N. Vukovic , C.A. Mancini , K. Gaj , Qing Ke , V. Adler , E.G. Friedman , Andrzej Kraśniewski , M.F. Bocko , M.J. Feldman


We have designed and RSFQ multiplier-accumulator, the central component of our decimation digital filter. The circuit consists of 38 synchronous RSFQ cells of six types arranged into a rectangular systolic array fed by one parallel input and one serial input. Timing is based on counter-flow clock distribution scheme with simulated maximum clock frequency of 11 GHz. The circuit, fabricated at Hypres, Inc., contains 1100 Josephson junctions, has power consumption less than 0.2 mW, and area less than 2.5 mm2. The multiplier-accumulator has been tested at low frequency demonstrating full functionality and stable operation over a 24 hour testing period. This four-bit multiplier accumulator is one of the largest reported RSFQ circuits verified experimentally to date
Author Q.P. Herr
Q.P. Herr,,
, N. Vukovic
N. Vukovic,,
, C.A. Mancini
C.A. Mancini,,
, K. Gaj
K. Gaj,,
, Qing Ke
Qing Ke,,
, V. Adler
V. Adler,,
, E.G. Friedman
E.G. Friedman,,
, Andrzej Kraśniewski (FEIT / IT)
Andrzej Kraśniewski,,
- The Institute of Telecommunications
, M.F. Bocko
M.F. Bocko,,
, M.J. Feldman
M.J. Feldman,,
Journal seriesIEEE Transactions on Applied Superconductivity, ISSN 1051-8223
Issue year1997
Keywords in English0.2 mW, 11 GHz, 4 bit, adders, circuit testing, clocks, counter-flow clock distribution, decimation digital filter, design, digital filters, Digital signal processing, electronic equipment testing, frequency, Josephson junctions, logic circuits, logic design, low speed testing, multiplier-accumulator, multiplying circuits, RSFQ circuit, Space technology, superconducting device testing, superconducting logic circuits, synchronous cells, systolic array, systolic arrays
ASJC Classification2208 Electrical and Electronic Engineering; 3104 Condensed Matter Physics; 2504 Electronic, Optical and Magnetic Materials
Score (nominal)25
Score sourcejournalList
Publication indicators GS Citations = 30.0; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 1.988; WoS Impact Factor: 2006 = 0.717 (2) - 2007=1.191 (5)
Citation count*30 (2015-04-26)
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