KMT32B

MAGNETIC ANGLE SENSOR KMT32B Preliminary Preliminary Data Sheet KMT32B HL PLANARTECHNIK GmbH Hauert 13 44227 Dortmund Germany www.hlplanar.de [email protected] phone: +49-(0)231-97400 fax: +49-(0)231-974020 KMT32B_PreliminaryDataSheet (2007-01-12)-1.doc Last update 19.01.07 www.DataSheet.in MAGNETIC ANGLE SENSOR KMT32B Preliminary FEATURES Contactless angular position Ideal for harsh environments due to magnetic sensing Factory optimized linearity Low Cost High Accuracy High rotational speed up to 30,000 rpm Extended operating temperature range (-40 ° C to +150 ° C) Low Power RoHS compliant (lead free) SMD package APPLICATIONS Absolute and incremental angle Angle Measurement Motor motion control Robotics Camera positioning Potentiometer replacement Automotive PACKAGES SM8 SO8 TDFN Die General Description The KMT32B is a magnetic field sensor based on the anisotropic magnetoresistance effect. 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(2α) and the second following a sin(2α) function, α being the angle between sensor and field direction (see Figure 1). 15 10 5 Uo/Ucc [mV/V] KMT32B 0 0 -5 45 90 135 180 225 270 315 360 -Vo1 -Vo2 +Vcc2 GND1 GND2 +Vo2 +Vo1 -10 +Vcc1 -15 α [de g] bridge1 (sin) bridge2...