Controlled hysteresis comparator with rail-to-rail input
US6970022B1 · kind B1 · utility
26Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Dec 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/2481
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Comparator circuits, including rail-to-rail comparator circuits, can implement inverter structures such as current-starved inverters to provide hysteresis to the comparator's output. For example, a current-starved inverter can have its input driven by the comparator output and add current to the currents produced by the comparator's input stage. The inverter current can be derived from bias sources used to bias the input stage of the comparator so that the inverter current can track the input stage bias currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.