An ultra-low-power front-end for differential capacitive sensors - LIRMM - Laboratoire d’Informatique, de Robotique et de Microélectronique de Montpellier Access content directly
Conference Papers Year : 2015

An ultra-low-power front-end for differential capacitive sensors

Abstract

In this paper, we present a simple, compact and low-power interface for differential capacitive sensors with direct digital output. The complete system is composed with a current to voltage amplifier, an integrator, a comparator and a feedback capacitor connected in parallel with one of the two capacitances. Overall a Sigma-Delta modulator is obtained that is able to deliver directly a bit stream proportional to the differential capacitance.
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Dates and versions

lirmm-01235453 , version 1 (30-11-2015)

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Patcharee Kongpark, Frédérick Mailly, Laurent Latorre, Pascal Nouet. An ultra-low-power front-end for differential capacitive sensors. DTIP: Design, Test, Integration and Packaging, Apr 2015, Montpellier, France. ⟨10.1109/DTIP.2015.7160964⟩. ⟨lirmm-01235453⟩
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