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ZMZ20M Datasheet Preview

ZMZ20M Datasheet

MAGNETIC FIELD SENSORS

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MAGNETIC FIELD SENSORS
DESCRIPTION
The ZMZ20M 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 is provided by an internal
permanent magnet.
FEATURES
Output voltage proportional to magnetic field Hy
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 & vehicle-type sensing
Measurement of current in a conductor without
connection
ORDERING INFORMATION
DEVICE
ZMZ20M
BOX
Bulk in box (2,000 components per box)
DEVICE MARKING
M2M
ISSUE 2 - MARCH 2004
1
ZMZ20M
Hy
Hx
E-LINE
PINOUT
SIDE VIEW
SEMICONDUCTORS




Zetex Semiconductors

ZMZ20M Datasheet Preview

ZMZ20M Datasheet

MAGNETIC FIELD SENSORS

No Preview Available !

ZMZ20M
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply voltage
Total power dissipation
Operating temperature range
SYMBOL
VB
PTOT
Tamb
LIMIT
12
120
-25 to +125
UNIT
V
mW
°C
ELECTRICAL CHARACTERISTICS (at Tamb = 25°C unless otherwise stated)
PARAMETER
SYMBOL MIN. TYP. MAX.
UNIT
CONDITIONS
Bridge resistance
Output voltage range
Auxiliary field
Disturbing field
Open circuit sensitivity
Rbr
VO/VB
Hx
Hd
S
Hysteresis of output voltage
Offset voltage
Operating frequency
Temperature coefficient of offset
voltages
VOH/VB
Voff/VB
fmax
TCVoff
Temperature coefficient of bridge TCRbr
resistance
Temperature coefficient of open
circuit sensitivity
VB =5V
TCSV
1.2 1.7 2.2
k
12 18 24
mV/V
- 2.5 -
kA/m
- - 30
kA/m
3.0 5.0 7.0 (mV/V)/(kA/m) No disturbing field Hd
allowed
- - 50
µV/V
Hy Յ 2kA/m
-1.5 - +1.5
mV/V
0-1
MHz
-3 - +3
(µV/V)/K Tamb = -25 to +125°C
0.25 0.3 0.35
%/K Tamb = -25 to +125°C
-0.25 -0.3 -0.35
%/K Tamb = -25 to +125°C
ISSUE 2 - MARCH 2004
SEMICONDUCTORS
2


Part Number ZMZ20M
Description MAGNETIC FIELD SENSORS
Maker Zetex Semiconductors
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