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1. (WO2017136148) CIRCULAR VERTICAL HALL (CVH) SENSING ELEMENT WITH SIGNAL PROCESSING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/136148 International Application No.: PCT/US2017/014081
Publication Date: 10.08.2017 International Filing Date: 19.01.2017
IPC:
G01D 5/14 (2006.01)
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12
using electric or magnetic means
14
influencing the magnitude of a current or voltage
Applicants:
ALLEGRO MICROSYSTEMS, LLC [US/US]; 115 Northeast Cutoff Worcester, Massachusetts 01606, US
Inventors:
ALPAGO, Octavio, H.; AR
ALVES, Ezequiel; AR
ROMERO, Hernán , D.; AR
Agent:
MILMAN, Seth, A.; US
WHITE, James, M.; US
DURKEE, Paul, D.; US
ROBINSON, Kermit; US
CROWLEY, Judith, C.; US
MOOSEY, Anthony, T.; US
MOFFORD, Donald, F.; US
DALY, Christopher, S.; US
DOWNING, Marianne, M.; US
LANGE, Kristoffer, W.; US
CROOKER, Albert, C.; US
Priority Data:
15/012,12501.02.2016US
Title (EN) CIRCULAR VERTICAL HALL (CVH) SENSING ELEMENT WITH SIGNAL PROCESSING
(FR) ÉLÉMENT DE DÉTECTION À EFFET HALL VERTICAL CIRCULAIRE (CVH) AVEC TRAITEMENT DU SIGNAL
Abstract:
(EN) A magnetic field sensor comprises a circular vertical Hall (CVH) sensing element having a plurality of vertical Hall elements. A CVH output stage is included comprising one or more of drive circuits to drive the plurality of vertical Hall elements and produce an analog signal representing a strength of an external magnetic field as detected by the plurality of vertical Hall elements. An analog-to-digital converter is coupled to receive the analog signal and produce a digital signal. A quadrature modulator circuit is coupled to the digital signal and operable to generate a plurality of quadrature modulated signals. A processor stage receives signals representative of the plurality of quadrature modulated signals and computes an estimated angle of the external magnetic field.
(FR) La présente invention concerne un capteur de champ magnétique comprenant un élément de détection à effet Hall vertical circulaire (CVH) comportant une pluralité d'éléments à effet Hall vertical. Un étage de sortie CVH est inclus et comprend un ou plusieurs circuits d'attaque servant à exciter la pluralité d'éléments à effet Hall vertical et à produire un signal analogique représentant l'intensité d'un champ magnétique externe détecté par la pluralité d'éléments à effet Hall vertical. Un convertisseur analogique-numérique est couplé afin de recevoir le signal analogique et de produire un signal numérique. Un circuit de modulation en quadrature est couplé au signal numérique et permet de générer une pluralité de signaux modulés en quadrature. Un étage de processeur reçoit des signaux représentant la pluralité de signaux modulés en quadrature et calcule un angle estimé du champ magnétique externe.
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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, DJ, 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, KH, 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:
EP3408619