Schmitt trigger with gated transition level control
US8203370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Dec 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Schmitt trigger comprises first and second circuitry. The first circuitry receives an input voltage and provides an output voltage at either a logical “low” or a logical “high” voltage level responsive to the input voltage and a first bias voltage. The second circuitry connects to the first circuitry to generate a second bias current for generating the output voltage. The second bias current is larger than the first bias current. The Schmitt trigger operates in a low power mode of operation using only the first bias voltage to maintain the logical “low” voltage level or the logical “high” voltage level at a substantially constant level. In a high power mode of operation the Schmitt trigger uses the second bias voltage during transition periods between the logical “low” voltage level and the logical “high” voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.