Invention Application
- Patent Title: CANCELLATION OF NOISE DUE TO CAPACITANCE MISMATCH IN MEMS SENSORS
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Application No.: US15019453Application Date: 2016-02-09
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Publication No.: US20170227569A1Publication Date: 2017-08-10
- Inventor: Milad Alwardi , Deyou Fang
- Applicant: STMicroelectronics, Inc.
- Applicant Address: US TX Coppell
- Assignee: STMicroelectronics, Inc.
- Current Assignee: STMicroelectronics, Inc.
- Current Assignee Address: US TX Coppell
- Main IPC: G01P15/125
- IPC: G01P15/125 ; G01P15/08

Abstract:
Disclosed herein is a device including a MEMS sensor configured to generate a first differential capacitance representing a change in capacitance from a first original sensing capacitance value and a second differential capacitance representing a change in capacitance from a second original sensing capacitance value, with the first and second original sensing capacitance values being mismatched. A compensation circuit is configured to generate outputs for compensating the first and second differential capacitances for the mismatch. A capacitance to voltage converter receives the first and second differential capacitances and the outputs of the compensation circuit as input and generates an output voltage as a function thereof.
Public/Granted literature
- US10274510B2 Cancellation of noise due to capacitance mismatch in MEMS sensors Public/Granted day:2019-04-30
Information query
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