Cảm biến dòng từ Hall Effect KMZ52

KMZ52-Magnetic Field Sensor

FEATURES High sensitivity Integrated compensation coil Integrated set/reset coil.  APPLICATIONS Navigation Current and earth magnetic field measurement Traffic detection.

Specifications Sensing Range 16mV/V Type Special Purpose Voltage - Supply 5V ~ 8V Output Type Analog Operating Temperature -40°C ~ 125°C Package / Case 16-SOIC (0.154", 3.90mm Width) Packaging Tape & Reel (TR) add to  -

 DESCRIPTION
The KMZ52 is an extremely sensitive magnetic field sensor, employing the magnetoresistive effect of thin-film permalloy. The sensor contains two magnetoresistive Wheatstone bridges physically offset from one another by 90° and integrated compensation and set/reset coils. The integrated compensation coils allow magnetic field measurement with current feedback loops to generate outputs that are independent of drift in sensitivity. The orientation of sensitivity may be set or changed (flipped) by means of the integrated set/reset coils. A short current pulse should be applied to the compensation coils to recover (set) the sensor after exposure to strong disturbing magnetic fields. A negative current pulse will reset the sensor to reversed sensitivity. By use of periodically alternated flipping pulses and a lock-in amplifier, theoutput is made independent of sensor and amplifier offset