Magnetic sensor with serial resistor for asymmetric sensing field range

Abstract

The present disclosure generally relates to a Wheatstone bridge that has four resistors. Each resistor includes a plurality of tunneling magnetoresistance (TMR) structures. Two resistors have identical TMR structures. The remaining two resistors also have identical TMR structures, though the TMR structures are different from the other two resistors. Additionally, the two resistors that have identical TMR structures each have an additional non-TMR resistor as compared to the remaining two resistors that have identical TMR structures. Therefore, the working bias field for the Wheatstone bridge is non-zero.

Dependencies are inferred from the claim text.