Schmitt voltage comparator
US5162671A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Jan 16, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/02337
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential amplifier pair includes first and second transistors emitters of which are connected to each other. A first current source is connected to a common emitter connection point of the first and second transistors. A source of a first MOS transistor is connected to a collector of the first transistor, and a source of a second MOS transistor is connected to a collector of the second transistor. Drains of the first and second MOS transistors are commonly connected to each other, and a second current source is connected to a common drain connection point. The first and second MOS transistors are selectively controlled to be turned on in accordance with an output from the differential amplifier pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.