A fully integrated Hall sensor microsystem with current-mode output

This paper presents a fully integrated Hall sensor microsystem with a current-mode output. The system operates in open-loop and includes a Hall sensor with internal biasing, a fully differential front-end, a preamplifier chain and a voltage-to-current converter (V-I). The effects of the V-I block on...

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Bibliographic Details
Published in2011 18th IEEE International Conference on Electronics, Circuits, and Systems pp. 464 - 467
Main Authors Ajbl, A., Pastre, M., Kayal, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2011
Subjects
Adaptive systems
Current measurement
Resistors
Sensitivity
Silicon
Temperature measurement
Temperature sensors
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Summary:This paper presents a fully integrated Hall sensor microsystem with a current-mode output. The system operates in open-loop and includes a Hall sensor with internal biasing, a fully differential front-end, a preamplifier chain and a voltage-to-current converter (V-I). The effects of the V-I block on the sensitivity drift of the system are analyzed and a current biasing of the Hall cells is proposed so that the current output feature adds no drift to the microsystem sensitivity. The whole microsystem is integrated in a 0.35μm CMOS technology. It occupies an area of 11.55mm2. The sensitivity drift of the system is characterized, and shows that the V-I does not degrade the overall sensitivity drift of the system.
ISBN:1457718456
9781457718458
DOI:10.1109/ICECS.2011.6122313