SEMICONDUCTORS
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