Sigma-delta modulator for operating sensors
US7528755B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2007 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Sep 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sigma-delta modulator can be used for actuating a sensor element. The sigma delta modulator includes: a forward branch to which an input signal is fed at an input and which includes a loop filter, a quantizer and an output for providing an output signal. A feedback branch is configured to feed back the output signal of the forward branch at least temporarily to the input of the forward branch. A signal source is configured to generate a readout signal which corresponds to the voltage profile at the sensor element during a measuring process. A control unit is configured to generate a control signal dependent on which either the output signal of the forward branch or the readout signal of the signal source is fed back to the input of the forward branch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.