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ZMT32

Zetex Semiconductors
Part Number ZMT32
Manufacturer Zetex Semiconductors
Description Magnetic Field Angle Sensor
Published Mar 11, 2011
Detailed Description ZMT32 Magnetic Field Angle Sensor Description The ZMT32 is a thin film permalloy magnetic field sensor, which contains t...
Datasheet PDF File ZMT32 PDF File

ZMT32
ZMT32

Overview
ZMT32 Magnetic Field Angle Sensor Description The ZMT32 is a thin film permalloy magnetic field sensor, which contains two galvanic isolated Wheatstone Bridges for high precision angle measurement applications under low field conditions.
This angle sensor is based on the anisotropic magnetoresistive effect (AMR).
The two internal (VCC1, VCC2) bridges enclose a relative sensitive angle of 45 degrees.
The input field is a rotating magnetic field in the chip plane (parallel to the surface of package).
This rotating field will make available two independent sinusoidal output signals with the following relationship The precise ZMT32 works with low field applications (Hrot= 8 to 25kA/m), much lower than similar devices.
The ultimate output signal quality depends on the external magnetic material and on the mechanical realization.
The ZMT32 is a passive part and the ArcTangent interpolation needs external signal processing.
Typical areas of application are angle and speed measurement.
VO 2 Sin(2α ) = = Tan(2α ) VO1 Cos (2α ) where α = angle between sensor axis and field direction Features • • • • contactless angle measurement up to 180° flexible measuring solutions for moved systems stable operation over long time high temperature range up to +160°C Applications • • • • • angle and angular velocity measuring systems absolute angle and angle change automotive electronic (steering, control, pedal positioning, etc throttle contactless rotary switches and potentiometer automatic adjustment -VO1(cos) -VO2 (sin) VCC2(bridge 2) VCC1 (bridge 1) 1 2 3 4 8 7 6 5 GND (bridge 1) GND2 (bridge 2) +VO2 (sin) +VO1 (cos) Ordering Information www.
DataSheet4U.
com ZMT32TA Device Reel size (Inches) 7 Tape width (mm) 12 Quantity per reel 1,000 Device marking ZETEX ZMT32 Issue 1 - June 2008 © Zetex Semiconductors plc 2008 1 www.
zetex.
com ZMT32 Absolute maximum ratings Parameter Supply Voltages Single Bridge Current Operating Temperature Range Storage Temperature Range Symbol ...


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