Magnetic field sensor and related techniques that provide an angle error correction module

A magnetic field sensor can include a plurality of magnetic field sensing elements; an angle processing circuit to generate an uncorrected x-y angle value representative of an angle of a magnetic field in an x-y plane, the uncorrected x-y angle value comprising a first angle error component; an angl...

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Hauptverfasser: SCHEINKERMAN RICARDO, MONREAL GERARDO A, ROMERO HERNAN D
Format: Patent
Sprache:eng
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Zusammenfassung:A magnetic field sensor can include a plurality of magnetic field sensing elements; an angle processing circuit to generate an uncorrected x-y angle value representative of an angle of a magnetic field in an x-y plane, the uncorrected x-y angle value comprising a first angle error component; an angle error correction module to generate an x-y angle error value indicative of an error in the uncorrected x-y angle value, wherein the angle error correction module uses a sinusoidal error relationship, a sine look up table, and a coefficient table memory to determine the x-y angle error value; and a combining module to combine the uncorrected x-y angle value with the x-y angle error value. A similar method is used.