DESCRIPTION
iC-SM2L is a linear position sensor which operates on the AMR effect (anisotropic magneto resistance) and has been designed to work with magnetic scales which have a N/S pole pitch of 2 mm.
When the Sensor is moved along a magnetic scale with a N/S pole pitch of 2 mm the two Wheatstone bridges generate differential sinusoidal output voltages (PSIN - NSIN) and (PCOS - NCOS) phase-shifted at 90°. One sine/cosine cycle averaged using a pair of N/S poles is thus produced for a pole width. The absolute magnetic field strength must be large enough for the sensor to go into saturation and for the magnetization of iC-SM2L’s resistor stripes to assume the direction of the outer magnetic fields.

FEATURES
✦ Magneto resistive position sensor based on the AMR effect
✦ Strong field sensor for 2 mm N/S pole pitch
✦ One sine/cosine cycle per pole width (averaged using a pair of N/S poles)
✦ High interpolation due to a sine signal with few harmonics
✦ Low saturation field strength
✦ High amplitude consistency with changes in distance
✦ Resistant to strong magnetic fields
✦ Not sensitive to external homogenous magnetic fields
✦ Small SMT capable package

APPLICATIONS
✦ Linear position sensing
✦ Length measuring systems
✦ Off-axis hollow shaft rotary encoders