KMT32B Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – MAGNETIC ANGLE SENSOR

TDFN
SO8
KMT32B
Magnetic Angle Sensor
SPECIFICATIONS
 AMR Sensor with 180° period
 high accuracy
 high resolution
 for the use at moderate field strengths
 tiny TDFN package
 ROHS & REACH compliant
The KMT32B is a magnetic field sensor based on the
anisotropic magneto resistance effect, i.e. it is sensing the
magnetic field direction independently on the magnetic field
strength for applied field strengths H>25 kA/m. The sensor
contains two parallel supplied Wheatstone bridges, which enclose
a sensitive angle of 45 degrees.
FEATURES
 Contactless angular position,
ideal for harsh environments
 Design optimized for linearity
 High accuracy
 Low cost, low power
 Self diagnosis feature
 Attractive SMD packages
 User has complete control over
signal evaluation
 Extended operating temperature
range
(-40 °C to +150 °C, +160°C on
request)
 REACH & RoHS compliant (lead
free)
A rotating magnetic field in the surface parallel to the chip (x-y
plane) will therefore deliver two independent sinusoidal output
signals, one following a cos(2) and the second following a
sin(2) function,  being the angle between sensor and field
direction (see Figure 2).
The KMT32B magnetic field sensor is suited for high precision
angle measurement applications at a regular field strength of H0
≥ 25 kA/m (generated for example with magnet 67.044 from
Magnetfabrik Bonn at a distance of 5.2 mm at room temperature).
With reduced accuracy, the sensor KMT32B may be used with a
field strength of H0 ≥ 14 kA/m (at room temperature; be aware of
the influence of the earth magnetic field!). Most magnets show a
decreasing field strength with temperature while the magnetic
field direction is unchanged.
SENSOR SOLUTIONS /// KMT32B Rev 6
1/2016
Page 1