A high-T/sub c/ 4-bit periodic threshold analog-to-digital converter
| Autor: | G.J. Gerritsma, Remco J. Wiegerink, Horst Rogalla, A.J. Verhoeven |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Josephson effect
Resistive touchscreen Fabrication Comparator Computer science Demagnetizing field Analog-to-digital converter Condensed Matter Physics Signal Electronic Optical and Magnetic Materials law.invention Switching time law Hardware_INTEGRATEDCIRCUITS Electronic engineering Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 7:2987-2992 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.621946 |
| Popis: | Using ramp-type Josephson junctions a 4-bit periodic threshold ADC has been designed, fabricated and tested. Practical design constraints will be discussed in terms of noise immunity, flux flow, available technology, switching speed etc. In a period of four years we fabricated about 100 chips in order to bring the technology to an acceptable level and to test various designs and circuit layouts. This resulted in a basic comparator that is rather insensitive to the stray field generated by the analog input signal or variations in mask alignment during fabrication. The input signal is fed into the comparators using a resistive divider network. Full functionality at low frequencies has been demonstrated. |
| Databáze: | OpenAIRE |
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