Capacitance determination circuit and method for determining a capacitance
US10401409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2016 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jun 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K23/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to an embodiment, a capacitance determination circuit is provided comprising a voltage controlled oscillator configured to generate a frequency signal whose frequency depends on a control voltage supplied to the voltage controlled oscillator, a capacitor coupled to the voltage controlled oscillator wherein the control voltage depends on a voltage across the capacitor and a processing circuit configured to generate, based on the frequency signal generated by the voltage controlled oscillator over a time interval comprising at least one phase in which the capacitor is charged and comprising at least one phase in which the capacitor is discharged, an indication of the capacitance of the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.