A Comparative Study of Conditioning Architectures for Convective Accelerometers

Abstract : In this paper, we compare three different conditioning and readout electronics for CMOS convective accelerometers. The work is based on both characterization results and high-level simulations. The three following architectures are evaluated: (i) a simple amplifier, (ii) a chopper stabilized amplifier, and (iii) an innovative 1st-order thermal sigma-delta modulator. Experimental data are obtained using the hybrid combination of a 0.8µm CMOS integrated sensor and discrete electronics. Behavioral simulations were carried-out under Matlab®/Simulink® using small-signal models. The sensor model includes performance-limiting thermal phenomena and 1/f noise contributions. Previous studies describing the modeling of thermal sigma-delta modulators do not address device noise modeling, since most of the time, the performance of those modulators are limited by quantization noise. In our case, we show that the performance is limited by both the noise in the devices and the quantization noise.
keyword : Mems
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Communication dans un congrès
6th IEEE Conference on SENSORS 2007, Oct 2007, pp.107-110, 2007, 〈http://www.ieee-sensors2007.org/〉
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Contributeur : Frédérick Mailly <>
Soumis le : jeudi 6 décembre 2007 - 17:09:23
Dernière modification le : jeudi 24 mai 2018 - 15:59:24
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Olivier Leman, Frédérick Mailly, Laurent Latorre, Pascal Nouet. A Comparative Study of Conditioning Architectures for Convective Accelerometers. 6th IEEE Conference on SENSORS 2007, Oct 2007, pp.107-110, 2007, 〈http://www.ieee-sensors2007.org/〉. 〈lirmm-00194571〉

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