Compared to traditional magnetic sensitive elements

TMR has low power consumption

small size

high sensitivity and good temperature characteristics

etc

a two-wire non-contact angular sensor is designed based on TMR chip

according to low power consumption rule

hardware circuit is designed. Revision of sinusoidal curve of chip output and calibration of angle are performed by software

realize two-wire 4

20 m A output with XTR115 chip

which is able to measure 0

360° accurately. Experiment prove that the precision achieves requirements

which is especially for industrial situation when long-range signal transmission is necessary.