Diodes ZMZ20 - Manual

S E M I C O N D U C T O R S
DESCRIPTION
The ZMZ20 is an extremely sensitive magnetic field sensor in a 4 pin
E-Line package employing the magneto-resistive effects of thin film
Permalloy. It allows the measurement of magnetic fields or the detection
of metallic parts. The sensor consists of a chip covered with Permalloy
stripes which form a Wheatstone bridge, whose output voltage is
proportional to the magnetic field component Hy. A perpendicular field
Hx is necessary to suppress the hysteresis and this can be provided 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 and
speed sensing
•
Metering of fluids by sensing rotation of impeller
•
Traffic counting and vehicle-type sensing
•
Measurement of current in a conductor without
connection
DEVICE MARKING
•
M20
ZMZ20
ISSUE 2 - JANUARY 2004
MAGNETIC FIELD SENSORS
1
E-LINE
PINOUT
SIDE VIEW
DEVICE BOX
ZMZ20 Bulk in box (2,000 components per box)
ORDERING INFORMATION