Low cost and low variation oscillator
US7642872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2007 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Aug 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00202
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An oscillator circuit for use in integrated circuits. The oscillator circuit includes a delay generation circuit having a current mirror with at least a first current mirror branch and a second current mirror branch, a current source coupled to the first current mirror branch, a capacitive element coupled to the first current mirror branch; and a resistive element coupled to the second current mirror branch. The oscillator circuit further includes a plurality of inverting elements coupled in series with one another and a transconducting element coupled to an output of the plurality of inverting elements. The transconducting element is configured to discharge the capacitive element. A latching element is coupled to latch to an output signal of the plurality of inverting elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.