Comparator with floating capacitive supply
US11309877B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2021 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jan 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed are circuits and methods for a comparator with a floating capacitive supply. A capacitor is coupled between a comparator and a power supply. Two sets of electronic switches are configured in opposing operational states to shift the configuration of the circuit between a charging configuration and a decision configuration. In the charging configuration, the capacitor draws current from the power supply. In the decision configuration, the comparator pulls current from the capacitor to perform a decision. The configuration of the two sets of switches is alternated to toggle between the charging configuration and the decision configuration, allowing for the capacitor to be recharged between each decision performed by the comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.