NXP Semiconductors KMZ51
The KMZ51 is an extremely sensitive magnetic field sensor, employing the magnetoresistive effect of thin-film permalloy. The sensor contains one magnetoresistive Wheatstone bridge and integrated compensation and set/reset conductors. The integrated compensation conductor allows magnetic field measurement with current feedback loops to generate an output that is independent of drift in sensitivity.| Part No. | KMZ51 |
|---|---|
| Datasheet | KMZ51 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Magnetic field sensor |
| Buy | Stock & Price |
FEATURES
● High sensitivity● Integrated compensation coil
● Integrated set/reset coil.
APPLICATIONS
● Navigation● Current and earth magnetic field measurement
● Traffic detection.
DESCRIPTION
With the integrated set/reset conductor the orientation of sensitivity may be set or changed (flipped). A short current pulse on this conductor is needed 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, output will become independent of sensor and amplifier offset. QUICK REFERENCE DATA SYMBOL VCC S Voffset Rbridge Rcomp Acomp Rflip Iflip (min) tflip (min) Notes PARAMETER bridge supply voltage sensitivity (uncompensated) offset voltage bridge resistance compensation coil resistance compensation coil field factor; note 1 flip coil resistance minimum recommended flipping current; note 2 minimum flip pulse duration; note 2 − 12 −1.5 1 100 19 1 800 1 MIN.
