Title :
An 8-b Josephson digital signal processor
Author :
Kotani, Seigo ; Inoue, Atsuki ; Imamura, Takeshi ; Hasuo, Shinya
Author_Institution :
Fujitsu Ltd., Atsugi, Japan
fDate :
12/1/1990 12:00:00 AM
Abstract :
A 6.3 K-gate Josephson digital signal processor (DSP) that performs 240-ps 8-b multiplication and 410-ps 13-b addition is described. The structure of the DSP, which is based on a three-stage pipeline, and the design of the components used in the DSP are reviewed. The DSP contains 23000 Josephson junctions on a 5×5-mm die and was fabricated using 1.5-μm all-niobium Josephson techniques. Measurements indicate that the DSP can attain a nonparallel processing speed of 1 giga-operation per second (GOPS) with 12-mW power dissipation
Keywords :
Josephson effect; digital signal processing chips; pipeline processing; superconducting junction devices; superconducting processor circuits; 1.5 micron; 12 mW; 8 bit; DSP; Josephson digital signal processor; Josephson junctions; Nb-AlOx-Nb junctions; addition; multiplication; three-stage pipeline; Circuits; Clocks; Digital signal processing; Digital signal processors; Finite impulse response filter; IIR filters; Josephson junctions; Pipelines; Power dissipation; Read only memory;
Journal_Title :
Solid-State Circuits, IEEE Journal of
