This paper presents pre-layout simulation results on a CMOS implementation of a capacitance-to-time converter based electronic interface for differential capacitive sensors. Its simple architecture, comprising only three operational amplifiers (OA) and a digital mixer (inverted XOR gate) allows, by
properly setting the values of seven biasing resistors, to fit the working range anywhere from few femtoFarads to hundreds of picoFarads, giving the output quasi-digital signals (T and PW) in the useful us-ms range (appropriate for direct interfacing with general purposes micro-controllers). A couple of illustrative examples are provided.
Track
Sensors: Sensors, Sensor Networks, and Applications
Conference
1st Mosharaka International Conference on Emerging Applications of Electrical Engineering (MIC-ElectricApps 2020)
Congress
2020 Global Congress on Electrical Engineering (GC-ElecEng 2020), 4-6 September 2020, Valencia, Spain
Pages
--1
Topics
Design and Deployment of Sensor Systems Aerospace Sensor Systems
ISSN
2227-331X
DOI
BibTeX
@inproceedings{1153ElecEng2020,
title={CMOS Capacitance-to-Time Converter-Based Interface for Differential Capacitive Sensors},
author={Hala Darwish, and Càndid Reig, and Maria-Dolores Cubells-Beltran, and Gildas Leger, and Andrea De Marcellis},
booktitle={2020 Global Congress on Electrical Engineering (GC-ElecEng 2020)},
year={2020},
pages={--1},
doi={}},
organization={Mosharaka for Research and Studies}
}
