KMY_KMZ
Linear Magnetic Field Sensors
SPECIFICATIONS
KMY22
AMR sensor
Very high sensitivity
Almost no hysteresis
Various applications
Available with internal magnet
Available in several packages
Due to its featured properties - high sensitivity and almost no
KMY20
hysteresis the KMY / KMZ sensors are used in a wide range
of applications, like magnetic field measurement, revolution
counters, proximity detecting, and position measurement.
An uniaxial linear magnetic field will generate a linear output
within the specified magnetic field range.
KMZ20
SENSOR SOLUTIONS ///KMY_KMZ Rev 4 06/2017 Page 1
KMY _ K MZ
Linear Magnetic Field Sensors
FEATURES
Output proportional to magnetic field
strength with very high sensitivity
Very small hysteresis
Large operating temperature range, from
-40C up to +150 C
Highly reliable
With / without internal magnet
APPLICATIONS
Detection of very weak magnetic fields, like
earth magnetic field, or field generated by
small magnetic particles
Detection of objects that distort non-local
magnetic fields
Revolution measurement on ferromagnetic
gears
Contactless switch
Contactless displacement / position sensor
DESCRIPTION
An uniaxial linear magnetic field (in y-direction) will generate a linear output within the specified magnetic field range.
The sensor is available in two types: the KMY 20 M, KMY 21 M and KMZ 20 M sensor types contain intrinsic
magnets which provide an auxiliary magnetic field (in x-direction) at the sensor die which prevents magnetic
domains from flipping irregularly.
Auxiliary Field Dependence
15
If the dies MR174B or the
components KMY22, KMY20S or
KMZ20S are used, the auxiliary
field has to be provided by the
10
user. The dependence of the
sensitivity with auxiliary field
strength is depicted in the figure
aside.
5
Figure 1: Sensitivity dependence
on auxiliary field strength
0
0 1 2 3 4 5
Hx in kA/m
SENSOR SOLUTIONS ///KMY_KMZ Rev 4 06/2017 Page 2
S in mV/V/kA/m