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1. (WO2017058586) MAGNETIC FIELD SENSORS AND METHODS USING MIXING IN A MAGNETORESISTANCE ELEMENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/058586 International Application No.: PCT/US2016/052745
Publication Date: 06.04.2017 International Filing Date: 21.09.2016
IPC:
G01R 33/06 (2006.01) ,G01R 33/09 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
02
Measuring direction or magnitude of magnetic fields or magnetic flux
06
using galvano-magnetic devices
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
02
Measuring direction or magnitude of magnetic fields or magnetic flux
06
using galvano-magnetic devices
09
Magneto-resistive devices
Applicants:
ALLEGRO MICROSYSTEMS, LLC [US/US]; 115 Northeast Cutoff Worcester, Massachusetts 01606, US
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES [FR/FR]; 25 Rue Leblanc Batiment Le Ponant D 75015 Cedex Paris, FR
Inventors:
MONREAL, Gerardo, A.; AR
FRIEDRICH, Andreas, P.; FR
FERMON, Claude; FR
PANNETIER-LECOEUR, Myriam; FR
Agent:
ROBINSON, Kermit; US
CROWLEY, Judith, C.; US
MOOSEY, Anthony, T.; US
DURKEE, Paul, D.; US
MOFFORD, Donald, F.; US
DALY, Christopher, S.; US
DOWNING, Marianne, M.; US
MILMAN, Seth, A.; US
LANGE, Kristoffer, W.; US
CROOKER, Albert, C.; US
THOMAS, William, R.; US
WHITE, James, M.; US
Priority Data:
14/870,83430.09.2015US
Title (EN) MAGNETIC FIELD SENSORS AND METHODS USING MIXING IN A MAGNETORESISTANCE ELEMENT
(FR) CAPTEURS DE CHAMP MAGNÉTIQUE ET PROCÉDÉS UTILISANT UN MÉLANGE DANS UN ÉLÉMENT À MAGNÉTORÉSISTANCE
Abstract:
(EN) A magnetic field sensor and an associated method use one or more magnetoresistance elements ( 1302, 1304, 1306, 1308) driven with an AC mixing current (1312, 1316) and experiencing an AC mixing magnetic field which have AC components of the same frequency (fmod), such as to generate a DC voltage signal (1334a, 1334b) or a DC voltage signal component related to a slope of a transfer curve of the one or more magnetoresistance elements, wherein the mixing takes place in the magnetoresistance element(s) and results in changes of the value of the DC component in response to changes of the sensed external magnetic field.
(FR) La présente invention porte sur un capteur de champ magnétique et sur un procédé associé qui utilisent un ou plusieurs éléments à magnétorésistance (1302, 1304, 1306, 1308) entraînés avec un courant de mélange en courant alternatif (CA) (1312, 1316) et subissant un champ magnétique de mélange en courant alternatif qui comportent des composantes de courant alternatif de la même fréquence (fmod), de sorte à générer un signal de tension en courant continu (CC) (1334a, 1334b) ou une composante de signal de tension en courant continu associée à une pente d'une courbe de transfert du ou des éléments à magnétorésistance, le mélange ayant lieu dans le ou les éléments à magnétorésistance et donnant lieu à des changements de la valeur de la composante de courant continu à la suite de changements du champ magnétique externe détecté.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
KR1020180059835EP3347729JP2018531383