Title :
Superconducting A/D converters based on Josephson binary counters
Author_Institution :
Hypres Inc., Elmsford, NY, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
A/D converters (ADC) based on Josephson binary counters are demonstrated in all-Nb technology. These A/D converters use a single SQUID as the flux quantizer front-end with a minimum quantization level equivalent to 2 μA of input current. A 10-b unidirectional ADC and a 5-b tracking ADC are reported. Both circuits have been tested at 1 MS/s sampling rate with very low power consumption. They also exhibit good linearity within the full dynamic range tested
Keywords :
Josephson effect; SQUIDs; analogue-digital conversion; counting circuits; superconducting integrated circuits; A/D converters; Josephson binary counters; Nb technology; SQUID; flux quantizer front-end; low power consumption; minimum quantization level; tracking ADC; unidirectional ADC; Circuit testing; Counting circuits; Energy consumption; Josephson junctions; Linearity; Pulse generation; Quantization; SQUIDs; Signal generators; Superconducting devices;
Journal_Title :
Magnetics, IEEE Transactions on
