Relaxation oscillator having a dynamically controllable current source
US11003204B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jul 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0992
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Examples described herein provide for a relaxation oscillator and corresponding methods of operation. In an example, a circuit includes a dynamically controllable current source, a capacitor, and an oscillator generation circuit. The dynamically controllable current source includes a digitally tunable current mirror configured to generate a current. The digitally tunable current mirror includes multiple transistors configured to be selectively electrically connected in parallel to alter a gain of the digitally tunable current mirror to control the current. The capacitor is selectively electrically connected to the dynamically controllable current source. The oscillator generation circuit is electrically connected to the capacitor. The oscillator generation circuit is configured to generate an oscillation signal in response to a voltage of the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.