SENSOR OFFSET COMPENSATE CIRCUIT AND METHOD OF THEREOF

摘要

PURPOSE: A sensor offset compensation circuit and a method thereof are provided to estimate the offset of a hall sensor by inputting sensor output and sensor supply voltage to a rotation information estimator. CONSTITUTION: A linear hall sensor(110) is connected to a rotator and extracts the information of the rotator. A power source(120) supplies voltage to the linear hall sensor. A rotation information estimator(130) is connected to the power source and the linear hall sensor and receives the voltage of the power source and information on the rotator to estimate the DC offset of the hall sensor.