Methods and apparatus for trimming a magnetic field sensor

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United States of America Patent

PATENT NO 11402440
APP PUB NO 20170016965A1
SERIAL NO

14801997

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Abstract

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Method and apparatus for trimming a magnetic field sensor having a first magnetic field sensing element. The trimming includes the use of a curve for normalized sensitivity of the first magnetic field sensing element derived from a first curve corresponding to current through a coil in a first direction at a first time. This produces a field affecting the first magnetic field sensing element versus an external field. The trimming further includes a second curve corresponding to current through the coil in a second direction opposite to the first direction at a second time to produce a field affecting the first magnetic field sensing element versus an external field.

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Patent Owner(s)

Patent OwnerAddress
ALLEGRO MICROSYSTEMS LLC955 PERIMETER ROAD MANCHESTER NH 03103-3353

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chaware, Virag V Nashua, US 8 77
Haas, David J Concord, US 130 4132
Lapomardo, Jesse Pembroke, US 8 37

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