Invention Grant
- Patent Title: Sense amplifiers for gyroscopes and related systems and methods
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Application No.: US15900622Application Date: 2018-02-20
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Publication No.: US10914583B2Publication Date: 2021-02-09
- Inventor: Jiefeng Yan , William A. Clark
- Applicant: Analog Devices, Inc.
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Wolf, Greenfield & Sacks, P.C.
- Main IPC: G01C19/5712
- IPC: G01C19/5712 ; G01C19/5776 ; B81B7/00

Abstract:
Sense amplifiers for use in connection with microelectromechanical system (MEMS) gyroscopes are described. The sense amplifiers may be configured to change the level of a gyroscope signal, i.e., the signal produced by a gyroscope in response to angular motion, to a level suitable for processing circuitry arranged to infer the angular velocity. The sense amplifier may further provide a DC discharge path allowing for discharge of the DC component of the output signal. The DC discharge path may include an anti-aliasing filter and a resistive circuit. The anti-aliasing filter may filter the output signal to maintain the resistive circuit in the linear region. The anti-aliasing filter may be designed with a frequency response such that discrete frequency sub-bands are blocked or at least attenuated. The frequency sub-bands may be tuned to substantially match the gyroscope's resonant frequency and its integer multiples.
Public/Granted literature
- US20190257654A1 SENSE AMPLIFIERS FOR GYROSCOPES AND RELATED SYSTEMS AND METHODS Public/Granted day:2019-08-22
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