MAGNETIC ANGLE SENSOR KMT32B
Preliminary
Preliminary Data Sheet KMT32B
HL PLANARTECHNIK GmbH • Hauert 13 • 44227 Dort...
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...