Title :
A Sigma-Delta closed-loop digital microfluxgate magnetometer
Author :
Gayral, F. ; Delevoye, E. ; Condemine, Cyril ; Colinet, E. ; Mieyeville, F. ; Gaffiot, F.
Author_Institution :
CEA, Grenoble
Abstract :
This paper presents the concept and the design of a new architecture for microfluxgate sensors. An innovative low-pass architecture based on pulsed excitation is presented, with a SigmaDelta-based closed-loop measurement circuit including digital and semi-digital filters. While the total power consumption is reduced to about 20 mW, it also allows a power/resolution tradeoff for a digitally-controlled tunable magnetometer.
Keywords :
digital filters; fluxgate magnetometers; magnetic circuits; magnetic field measurement; magnetic sensors; microsensors; sigma-delta modulation; SigmaDelta-based closed-loop measurement circuit; closed-loop digital microfluxgate magnetometer; digitally-controlled tunable magnetometer; low-pass architecture; microfluxgate sensors; pulsed excitation; semi-digital filters; Coils; Delta-sigma modulation; Digital filters; Frequency; Magnetic sensors; Magnetometers; Permeability; Pulse measurements; Sensor phenomena and characterization; Temperature sensors;
Conference_Titel :
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
1-4244-0395-2
Electronic_ISBN :
1-4244-0395-2
DOI :
10.1109/ICECS.2006.379779
