Position Sensor - KMT32B0 pages

KMT32B Magnetic Angle Sensor
KMT32B Angle Sensor Rev 1 www.meas-spec.com 05/12/2009
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TDFN SO8 SM8
• AMR Sensor with 180° Period
• Moderate Field Strength
• High Accuracy
• TDFN Package
• Various Packages Available
DESCRIPTION
The KMT32B is a magnetic field sensor based on the anisotropic magnetoresistance 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.
A rotating magnetic field in the surface parallel to the chip (x-y plane) will deliver two independent sinusoidal
output signals, one following a cos(2á) and the second following a sin(2á) function, á being the angle
between sensor and field direction (see Figure 2).
FEATURES APPLICATIONS
• Contactless Angular Position • Absolute and Incremental Angle
• SMD Package • Angle Measurement
• Design Optimized Linearity • Motor Motion Control
• Low Cost • Robotics
• High Accuracy • Camera Positioning
• High Rotational Speed up to 30,000 rpm • Potentiometer Replacement
• Extended Operating Temperature Range
(-40 °C to +150 °C, +160°C on request)
• Automotive
• Low Power
• RoHS Compliant (lead free)
• Ideal for Harsh Environments due to Magnetic
Sensing