A fully-analog integrated electronic interface for the detection and measurement of differential capacitive position sensors is shown. The read-out circuit, performing a differential capacitive to voltage conversion, has been developed in a standard 0.35 μm CMOS technology with low-voltage/low-power characteristics. The interface has shown a good accuracy, in particular the relative percentage error is lower than 0.8% for the simulations of the integrated solution. When compared to other solutions in the literature, sensitivity (S) and resolution (res) data on a practical case-study of position sensor are satisfactory so validating the architecture to be a good candidate as first stage in analog front-ends for differential capacitive sensor data measurements.

Voltage-mode analog interfaces for differential capacitance position transducers

Ferri, G.;Parente, F. R.;Stornelli, V.;Barile, G.;
2018-01-01

Abstract

A fully-analog integrated electronic interface for the detection and measurement of differential capacitive position sensors is shown. The read-out circuit, performing a differential capacitive to voltage conversion, has been developed in a standard 0.35 μm CMOS technology with low-voltage/low-power characteristics. The interface has shown a good accuracy, in particular the relative percentage error is lower than 0.8% for the simulations of the integrated solution. When compared to other solutions in the literature, sensitivity (S) and resolution (res) data on a practical case-study of position sensor are satisfactory so validating the architecture to be a good candidate as first stage in analog front-ends for differential capacitive sensor data measurements.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/122235
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