Telescopic analog front-end for pressure sensors
US11525749B2 · kind B2 · utility
0Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | May 22, 2018 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Feb 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wireless communication device includes a pressure sensor to generate a first signal in response to a pressure variation. A variable offset capacitor is coupled in parallel with the pressure sensor. A first analog-to-digital converter (ADC) is coupled to the variable offset capacitor and to convert the first signal to a digital signal. The pressure sensor is a capacitive pressure sensor. The variable offset capacitor is a digitally controlled variable capacitor and the ADC is a low-resolution and low-power ADC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.