Sigma delta modulator for sensors
US10123103B1 · kind B1 · utility
1Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2017 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In various embodiments, a circuit is provided. The circuit includes: a voltage biasing circuit coupled to a microelectro-mechanical system (MEMS) microphone sensor, the MEMS microphone sensor coupled to a driver circuit, and the driver circuit coupled to an oscillator-based ADC circuit. The oscillator-based ADC circuit may include an Nth order sigma-delta modulator, where N is an integer equal to or greater than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.