Analysis of high-performance counter-type A/D converters using RSFQ logic/memory elements

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5523908

Rylov, S V ^[1]

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1. Dept. of Physics, Moscow State Univ., Moscow 119899 GSP (SU)

This paper proposes a new family of counter-type Josephson-junction A/D converters using ultrafast RSFQ logic/memory elements. The converters are built of two main blocks: a low-bit differential-code A/D converter running with sub-terahertz clock speed and a RSFQ-logic-based digital processing unit providing digital low-pass filtering and sample rate reduction. It is shown that such converters can be treated as digital SQUIDs processing extremely high slew rate (up to 10{sup 11} {phi}{sub 0}/s) combined with flux resolution close to that of analog dc SQUIDs (up to 10{sup {minus}6} {phi}{sub 0}Hz{sup {minus}1/2}). Several ways of implementation of both main blocks enabling trade-off of these parameters against complexity of converter are presented and discussed.

• OSTI ID: 5523908
• Report Number(s): CONF-900944--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANALOG SYSTEMS
ANALOG-TO-DIGITAL CONVERTERS
DESIGN
DIGITAL SYSTEMS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
JOSEPHSON JUNCTIONS
JUNCTIONS
LOGIC CIRCUITS
MEASURING INSTRUMENTS
MEMORY DEVICES
MICROWAVE EQUIPMENT
PERFORMANCE
RESOLUTION
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS