Oscillator circuit
US9461632B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided is a CR oscillator circuit that achieves a small occupied area and good oscillation frequency accuracy while having small current consumption. The CR oscillator circuit includes: a reference voltage circuit configured to switch and output a reference voltage; a first constant current source configured to charge a capacitor; a second constant current source configured to discharge the capacitor; a voltage comparator configured to compare voltages of the reference voltage circuit and the capacitor; and a logic circuit. The logic circuit is configured to switch between the reference voltage circuit and the constant current source simultaneously in response to an output signal of the voltage comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.