公开(公告)号：US20230119854A1

公开(公告)日：2023-04-20

申请号：US17905214

申请日：2021-02-22

Applicant: CROCUS Technology SA

Inventor： Anuraag Mohan ,  Robert Zucker

IPC: G01R33/09 ,  G01R33/00

Abstract: Disclosed is a MTJ sensing circuit for measuring an external magnetic field and including a plurality of MTJ sensor elements connected in a bridge configuration, the MTJ sensing circuit having an input for inputting a bias voltage and generating an output voltage proportional to the external magnetic field multiplied by the bias voltage and a gain sensitivity of the MTJ sensing circuit, wherein the gain sensitivity and the output voltage vary with temperature; the MTJ sensing circuit further including a temperature compensation circuit configured to provide a modulated bias voltage that varies as a function of temperature over a temperature range, such that the output voltage is substantially constant as a function of temperature. Also disclosed is a method for compensating the output voltage for temperature.