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G-MRCO-003

P1-P3P4-P6P7-P9
SENSOR SOLUTIONS ///KMY_KMZ Rev 4 1/2016
Page 1
KMY22
KMY20
KMZ20
KMY_KMZ
Linear Magnetic Field Sensors
SPECIFICATIONS
AMR sensor
Very high sensitivity
Almost no hysteresis
Various applications
Available with internal magnet
Available in several packages
Due to its featured properties - high sensitivity and almost no
hysteresis – the KMY / KMZ sensors are used in a wide range
of applications, like magnetic field measurement, revolution
counters, proximity detecting, and position measurement.
An uniaxial linear magnetic field will generate a linear output
within the specified magnetic field range.
KMY_KMZ
Linear Magnetic Field Sensors
SENSOR SOLUTIONS ///KMY_KMZ Rev 4 1/2016
Page 2
FEATURES
Output proportional to magnetic field
strength with very high sensitivity
Very small hysteresis
Large operating temperature range, from
-40°C up to +150 °C
Highly reliable
With / without internal magnet
APPLICATIONS
Detection of very weak magnetic fields, like
earth magnetic field, or field generated by
small magnetic particles
Detection of objects that distort non-local
magnetic fields
Revolution measurement on ferromagnetic
gears
Contactless switch
Contactless displacement / position sensor
DESCRIPTION
An uniaxial linear magnetic field (in y-direction) will generate a linear output within the specified magnetic field range.
The sensor is available in two types: the KMY 20 M, KMY 21 M and KMZ 20 M sensor types contain intrinsic
magnets which provide an auxiliary magnetic field (in x-direction) at the sensor die which prevents magnetic
domains from flipping irregularly.
If the dies MR174B or the
components KMY22, KMY20S or
KMZ20S are used, the auxiliary
field has to be provided by the
user. The dependence of the
sensitivity with auxiliary field
strength is depicted in the figure
aside.
Figure 1: Sensitivity dependence
on auxiliary field strength
0
5
10
15
0 1 2 3 4 5
Hx in kA/m
S in mV/V/kA/m
KMY_KMZ
Linear Magnetic Field Sensors
SENSOR SOLUTIONS ///KMY_KMZ Rev 4 1/2016
Page 3
Auxiliary field strengths below Hx<1.5 kA/m are not recommended, as small disturbances may flip the
magnetization domains. Sometimes, the magnetic conditions in the application may provide enough Hx bias
field stabilization. MEAS Germany can provide advice for customer specific magnet arrangements.
If a bias field Hx is not applied or
Hx is less than 2.5 kA/m, the
sensor may be used only in a
limited field range Hy, depending
on the present total bias field
Hx,tot. In this case, it is strongly
recommended to ‘premagnetize’
the sensor, i.e. align all magnetic
domains consistently, prior to the
measurement.
Hx,tot is the sum of all acting
magnetic fields in x direction at
the sensor die.
Do not use the sensor outside
the safe operating area.
Leaving the save operating area
can destroy an existing
premagnetization and therefore
will lead to unreproducible
sensor signals.
Figure 2: Safe operating area
CHARACTERISTIC VALUES / SENSOR SPECIFICATIONS
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Operating Limits
max. supply voltage
V
cc,max
10
V
max. current
I
cc,max
9
mA
operating temperature
T
op
-40
+150
C
storage temperature
T
st
-40
+150
C
General Sensor Specifications
TC of amplitude
TCSV
Condition A, C
-0.35
%/K
TC of resistance
TCBR
Condition A, C
+0.35
%/K
TC of offset
TCVoff
Condition A, C
-4
0
+4
µV/V/K
Sensor Specifications KMY 20 S, KMZ 20 S, KMY 22 (T=25 °C, Hx=3 kA/m externally)
Supply voltage
V
cc
Condition A, B
5
V
Bridge resistance
R
b
Condition A, B
1200
1700
2200
Output signal range
V
0
/V
cc
Condition A, B
16
20
24
mV/V
Offset voltage
V
off
/V
cc
Condition A, B
-1
0
+1
mV/V
Sensitivity
S
Condition A, B
3.7
4.7
5.7
mV/V/kA/m
P1-P3P4-P6P7-P9

G-MRCO-003

Mfr. #:
Buy G-MRCO-003
Manufacturer:
TE Connectivity
Description:
Magnetic Sensors Board Mount Hall Effect / Magnetic Sensors KMZ 20M + INTEGR.BIAS MAGNET
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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