Invention Grant
US08981860B2 Use of electronic attenuator for MEMS oscillator overdrive protection
有权
电子衰减器用于MEMS振荡器超速保护
- Patent Title: Use of electronic attenuator for MEMS oscillator overdrive protection
- Patent Title (中): 电子衰减器用于MEMS振荡器超速保护
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Application No.: US13721630Application Date: 2012-12-20
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Publication No.: US08981860B2Publication Date: 2015-03-17
- Inventor: Aaron Caffee , Manu Seth , Brian Drost
- Applicant: Silicon Laboratories Inc.
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Abel Law Group, LLP
- Main IPC: H03L5/00
- IPC: H03L5/00 ; H03B5/30 ; B81B7/02

Abstract:
An apparatus includes a microelectromechanical system (MEMS) device configured as part of an oscillator. The MEMS device includes a mass suspended from a substrate of the MEMS, a first electrode configured to provide a first signal based on a displacement of the mass, and a second electrode configured to receive a second signal based on the first signal. The apparatus includes an amplifier coupled to the first electrode and a first node. The amplifier is configured to generate an output signal, the output signal being based on the first signal and a first gain. The apparatus includes an attenuator configured to attenuate the output signal based on a second gain and provide as the second signal an attenuated version of the output signal.
Public/Granted literature
- US20140176248A1 USE OF ELECTRONIC ATTENUATOR FOR MEMS OSCILLATOR OVERDRIVE PROTECTION Public/Granted day:2014-06-26
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