Fully parallel threshold type analog-to-digital converter
US4417233A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1980 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Feb 22, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A parallel type A/D converter capable of operating at an extremely high speed with a high degree of accuracy and with low power consumption. A plurality of comparators each having a reference voltage corresponding to an assigned quantizing level are disposed in parallel with each other and divided into a plurality of comparator blocks or groups. A plurality of sub-comparators are provided so that prior to the comparison of the input signal by the comparators, the input signal is first compared with the reference voltages of the sub-comparators and in response to the output from the sub-comparator having the reference voltage comparable or corresponding to the incoming input signal, only the comparators in the comparator block or group associated with said sub-comparator are energized or enabled while the remaining comparators are kept de-energized or disabled, whereby a minimum power consumption may be attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.