Chopper stabilized integrated Hall effect magnetometer

Author

Ouffoue, Cyrius ; Hébrard, Luc ; Frick, VIncent ; Kern, Christian

Author_Institution

Inst. d´´Electron. du Solide et des Syst., InESS, Strasbourg, France

fYear

2009

fDate

19-22 Dec. 2009

Firstpage

54

Lastpage

57

Abstract

This paper presents a low noise, low offset and wide dynamic range Hall effect magnetometer integrated in a 0.35 Â¿m CMOS technology. It features a spinning-current operated Hall device and a chopper stabilization, which has been unconventionally implemented using high-pass filters. The magnetometer exhibits 350 Â¿T offset, can measure magnetic fields up to 1T with 10 Â¿T resolution over a 3.6 kHz bandwidth.

Keywords

CMOS analogue integrated circuits; Hall effect devices; choppers (circuits); high-pass filters; magnetic field measurement; magnetometers; CMOS technology; Hall device; bandwidth 3.6 kHz; chopper stabilization; high-pass filters; low offset Hall effect magnetometer; size 0.35 mum; spinning-current operated Hall device; wide dynamic range Hall effect magnetometer; Bandwidth; CMOS technology; Choppers; Dynamic range; Filters; Hall effect; Magnetic field measurement; Magnetic noise; Magnetic separation; Magnetometers; Chopper stabilization; Hall effect magnetometer; Highpass filter; Spinning-current;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics (ICM), 2009 International Conference on

Conference_Location

Marrakech

Print_ISBN

978-1-4244-5814-1

Type

conf

DOI

10.1109/ICM.2009.5418590

Filename

5418590