ZMY20_07 Datasheet, PDF (1/8 Pages) Zetex Semiconductors – MAGNETIC FIELD SENSOR

MAGNETIC FIELD SENSOR
ZMY20
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
ORDERING INFORMATION
DEVICE
ZMY20TA
ZMY20TC
REEL
SIZE
7”
13”
TAPE
WIDTH
12mm
12mm
QUANTITY
PER REEL
1000 units
4000 units
• Measurement of current in a conductor without
connection
DEVICE MARKING
• ZMY20
Hy
-VB
Hx
+VB
-VO
+VO
SOT223S
PINOUT
-V_B
+V_O -V_O +V_B
V_B = SUPPLY VOLTAGE
V_O = OUTPUT VOLTAGE
Top View
ISSUE 3 - JUNE 2007
1
SEMICONDUCTORS