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In this paper, we have proposed an input interfacing scheme with differential output for integrated capacitive sensor applications. In the proposed scheme, the front-end interfacing is based on switched capacitor charge amplifier configuration using a fully differential operational transconductance amplifier and one differential capacitive sensor arrangement which provides differential output with...
This paper presents the design procedure for thorough analysis of a closed loop Micro-Electro-Mechanical Systems (MEMS) capacitive accelerometer system based on sigma-delta modulation technique. A signal conditioning IC has been designed in UMC 180 nm process in Cadence Analog Design Environment. To perform detailed simulation of the entire system, the MEMS device has also been replaced by its electrical...
Micro-Electro-Mechanical System (MEMS) sensors are integrated with suitable signal conditioning unit (SCU) to provide usable output. Though the output of the SCU can be either analog or digital, digital output is often required in many system applications where other components are mostly digital. This work integrates a sigma-delta (ΣΔ) Analog to Digital Converter (ADC) with an analog front-end for...
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