Apparatus and method for extending analog front end sense range of a high-Q MEMS sensor

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United States of America Patent

PATENT NO 9835647
APP PUB NO 20150268284A1
SERIAL NO

14661426

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Abstract

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Apparatus and methods for interfacing with a micro-electromechanical system (MEMS) sensor are provided. In an example, an apparatus can interface circuit including an integrator circuit, a sample switch circuit, a saturation detector and a controller. The saturation detector can be configured to receive a signal indicative of an integration of charge of the sensor, to compare the signal indicative of the integration of charge to an integrator saturation threshold and to modulate a divide parameter using the comparison of the signal indicative of the integration of charge and the integrator saturation threshold. The controller can be configured to receive a clock signal and to control the sample switch circuit based on a phase of the clock signal and the divide parameter.

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Patent Owner(s)

Patent OwnerAddress
FAIRCHILD SEMICONDUCTOR CORPORATION5005 E MCDOWELL ROAD MAILDROP A700 PHOENIX AS 85008

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ashkar, Marwan Cupertino, US 2 6
Lee, Michelle San Jose, US 7 82
Opris, Ion San Jose, US 28 563
Pavan, Shanthi Fremont, US 11 97
Seng, Justin San Jose, US 6 142

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