Device generating a precise reference voltage
US6650175B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/575
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device generating a precise reference voltage. This device comprises a semiconductor circuit (1) of “bandgap” type delivering a reference voltage (Vref) and a multiplier circuit (2) delivering an output voltage (VOUT) from the reference voltage. A galvanic link (3) makes it possible to supply the semiconductor circuit (1) from the precise reference voltage, and an initialization circuit (4) makes it possible, on initialization, to replace this precise reference voltage with the build-up voltage of the supply voltage. Application to reference voltage generating circuits of analogue/digital converter circuits in CMOS technology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.