Self-oscillating multi-ramp converter and method for converting a capacitance into a digital signal
US10326464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2018 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | May 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/804
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to various embodiments, a multi-slope converter can have the following: an integrator circuit having a charge store; a clocked comparator; a sensor circuit having a capacitor arrangement and a charging circuit for pre-charging the capacitor arrangement, a discharging circuit; a switch arrangement and a controller circuit for actuating the switch arrangement based on a clock signal; wherein the controller circuit is set up to actuate the switch arrangement such that, alternately: in an integration cycle electrical charge is transferred from the capacitor arrangement of the sensor circuit to the charge store of the integrator circuit, and in a deintegration cycle the charge store of the integrator circuit is discharged by means of the discharging circuit, wherein after the integration cycle a residual charge remains stored in the charge store of the integrator circuit and is taken into consideration during a subsequent integration cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.