MODELING OF AN ADC BASED ON HIGH-T-C QOJS COMPARATORS

Existing proposals for high temperature superconductor analog to digit al converter (ADC) circuits suffer performance penalties because of th e difficulty of fabricating devices with small and controlled inductan ces. The design of a quasi-one junction SQUID (QOJS) comparator for a High-T-c flash ADC is proposed and discussed. The inductances are calc ulated with the help of a three-dimensional field calculation program, and simulations on the QOJS-comparator are performed using a SPICE-ty pe simulation program.