DESCRIPTION

The ZMY20 is an extremely sensitive magnetic sensor employing the magneto-resistive effect of thin film permalloy. It allows the measurement of magnetic fields or the detection of magnetic parts. The highly sensitive and small size magnetoresistive sensors consist of a chip covered with thin film permalloy stripes. These stripes form a Wheatstone bridge, whose output voltage is proportional to the magnetic field component Hy. A perpendicular field Hx is necessary to stabilize sensor operation. This can be done by using a small permanent magnet.

FEATURES

• Output voltage proportional to magnetic field Hy

• Adjustment of sensitivity and suppression of hysteresis by the auxiliary magnetic field Hx

• Magnetic fields vertical to the chip level are not effective

APPLICATIONS

• Linear position sensors for process control, door interlocks, proximity detectors, machine tool sensing

• Scalar measurement for compassing

• Automotive – door switches, engine position & speed sensing

• Metering of fluids by sensing rotation of impeller

• Traffic counting & vehicle-type sensing

• Measurement of current in a conductor without connection