Low-power voltage reference
US7564225B2 · kind B2 · utility
7Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2005 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Oct 7, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A circuit provides a voltage reference using very low power. It can also be used as a shut regulator for a quiescent current as low as 1.5 μA. It includes a transconductance amplifier, a gain stage, and a power transistor. One embodiment of this invention utilizes a work function difference between p+ gate and n+ gate to generate a predetermined reference voltage. In another embodiment of this invention, the predetermined reference voltage can be pre-adjusted using gate materials with different work functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.