Voltage reference buffer using voltage battery level shifter
US9190859B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | May 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an apparatus includes a first supply voltage and a second supply voltage. Level shifter circuitry is configured as a first voltage battery to shift a first voltage and a second voltage battery to shift a second voltage. A first circuit receives the shifted first voltage and sets a third voltage, and receives the shifted second voltage and sets a fourth voltage. The shifted first voltage is greater than the first supply voltage and the shifted second voltage level is less than the second supply voltage. A second circuit sets a fifth voltage and a sixth voltage. The fifth voltage follows the third voltage and the sixth voltage following the fourth voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.