Biasing circuit for a microelectromechanical acoustic transducer and related biasing method
US9329610B2 · kind B2 · utility
3Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Apr 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A biasing circuit for an acoustic transducer is provided with: a voltage-booster stage, which supplies, on a biasing terminal, a boosted voltage for biasing a first terminal of the acoustic transducer; and filtering elements, set between the biasing terminal and the acoustic transducer, for filtering disturbances on the boosted voltage. The biasing circuit is further provided with switches, which can be actuated so as to connect the first terminal to the biasing terminal of the voltage-booster stage, directly during a start-up step of the biasing circuit, and through the filtering elements at the end of the start-up step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.