Design and testing of QOS comparators for an RSFQ based analog to digital converter

Author

Brock, D.K. ; Martinet, S.S. ; Bocko, M.F. ; Przybysz, J.X.

Author_Institution

Dept. of Electr. Eng., Rochester Univ., NY, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2244

Lastpage

2247

Abstract

Successful utilization of the quasi one-junction SQUID (QOS) as a signal comparator for analog-to-digital conversion (ADC) has been demonstrated by several groups, This idea is extended to show how similar comparators can be integrated into an all rapid single flux quantum (RSFQ) digital architecture. Comparators are interrogated by SFQ sampling pulses and in turn give output according to the RSFQ convention. One- and two-bit ADC´s have been simulated, fabricated and tested at low speed. Total performance of these devices is estimated within the framework of a multiple bit parallel flash ADC architecture.<>

Keywords

SQUIDs; analogue-digital conversion; comparators (circuits); parallel architectures; signal sampling; superconducting device testing; superconducting logic circuits; ADC design; ADC testing; QOS comparators; RSFQ based analog to digital converter; SFQ sampling pulses; all rapid single flux quantum digital architecture; multiple bit parallel flash ADC architecture; one-bit ADC; quasi one-junction SQUID; signal comparator; two-bit ADC; Analog-digital conversion; Circuits; Computer architecture; Digital signal processing; Quantization; SQUIDs; Sampling methods; Testing; Transfer functions; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403032

Filename

403032