Half voltage generator for use in semiconductor memory device
US6867639B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2003 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Aug 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/147
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voltage generator for use in a semiconductor memory device provides a stabilized output voltage of half a supply voltage Vcc. The voltage generator includes a reference voltage generator capable of generating first and second reference voltages. A differential amplification drive circuit is capable of generating an output voltage responsive to the first and second reference voltages. A resistance/diode reference voltage generator is capable of generating third and fourth reference voltages. And a pull-up/down drive is capable of changing the output voltage responsive to the third and fourth reference voltages. The resulting voltage generator provides a stable and accurate output voltage that is resistant to output load variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.