Title :
Design and testing of quasi-one junction SQUID-based comparators at low and high speed for superconductive flash A/D convertors
Author :
Bradley, P. ; Dang, H.
Author_Institution :
Hypres Inc., Elmsford, NY, USA
Abstract :
The fabrication and testing of single comparators at low and high speeds (up to 10-GHz input bandwidth) to determine basic functionality, dynamic range, linearity, noise level, and dynamic distortions are described. A 4-b converter was tested at low speed without errors. The results indicate that a 6-b converter may be constructed of these comparators with very good linearity and 8 b should be achievable with slight design modification. The comparator was demonstrated to have an aperture uncertainty >
Keywords :
SQUIDs; analogue-digital conversion; circuit analysis computing; comparators (circuits); electron device testing; network synthesis; superconducting integrated circuits; 10 GHz; aperture time; aperture uncertainty; basic functionality; circuits; design modification; dynamic distortions; dynamic range; estimated parasitics; fabrication; high speed; jitter; linearity; low speed; noise level; quasi-one junction SQUID-based comparators; simulation; superconductive flash A/D convertors; testing; Apertures; Bandwidth; Circuit simulation; Dynamic range; Fabrication; Jitter; Linearity; Noise level; Testing; Uncertainty;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
