STUDY OF FIRST-ORDER THERMAL SIGMA-DELTA ARCHITECTURE FOR CONVECTIVE ACCELEROMETERS
Résumé
This paper presents the study of an original closed-loop conditioning approach for fully-integrated convective inertial sensors. The method is applied to an accelerometer manufactured on a standard CMOS technology using an auto-aligned bulk etching step. Using the thermal behavior of the sensor as a summing function, a first order sigma-delta modulator is built. This “electro-physical” modulator realizes an analog-to-digital conversion of the signal. Besides the feedback scheme should improve the sensor performance.
Domaines
Autre [cs.OH]Origine | Fichiers produits par l'(les) auteur(s) |
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