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GMRS4 Datasheet

Giant Magneto Resistive Position Sensor

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Giant Magneto Resistive Position Sensor
Version 1.0
Data Sheet
GMR S 4
This angle sensor is based on the brand new Giant Magneto Resistive (GMR)
technology. It is outstanding for the huge tolerances it offers to the user in
assembly.
Features
• GMR sensor on copper
leadframe
Sensitive to the direction, not
to the intensity of the magnetic
field
• Constant TC of basic resistance
R and magneto resistance R
Applications
• Rotation sensing with large air
gaps according to sketch below
• Angle encoders
• Contactless potentiometers
12.3 2.3
11.7 2.1
Chip center 0.55 ±0.15
4
3
2
1
4.7
4.3
ø0.15 0.3 A
Flash 0.1 max
Pin Configuration
1, 2 supply voltage
terminals
Approx. weight 0.05 g
1, 2 GMR access
3, 4 not connected
GPX06981
3, 4
not connected
Dimensions in mm
Internal magnetization is in direction of the longest side of the
housing.
Type
Marking
Ordering Code
x GMR S 4
s
Q62705-K5002
x new type
The GMR S 4 is an angle sensor based on sputtered metallic multilayer technology. The
outstanding feature of this magnetic sensor is the fact that it is sensitive to the
orientation of the magnetic field and not to its intensity as long as the field is in a range
between 5 … 15 kA/m. This means, the signal output of this sensor is independent
of the sensor position relative to the magnet in lateral, axial or rotational direction
in the range of several millimeters. Optimum results are achieved by using magnetic
targets like permanent magnets or magnetic pole-wheels. There is no need for a
biasing magnet! Due to the linear change of both, basic and field dependent part of the
resistance vs. temperature, simple and efficient electronic compensation of TC (R, R) is
possible.
Data Sheet 1 1999-04-01


Infineon Technologies Electronic Components Datasheet

GMRS4 Datasheet

Giant Magneto Resistive Position Sensor

No Preview Available !

GMR S 4
Rotating
Magnet
N
Resistance
S
GMR Sensor
Principle of operation
0˚ 180˚
Output signal vs orientation of magnet
R = R0 + 0.5 *R *(1-cos α)
360˚ Angle
OHS00375
Maximum Ratings
Parameter
Symbol
Operating temperature
Storage temperature
Supply current
Thermal conductivity
Magnetic field 1)
TA
Tstg
I1
GthC A
GthC C
Hrot
1) larger fields may reduce the magnetoresistive effect irreversibly
Value
– 40 … + 150
– 50 … + 150
5
> 2.2
>5
< 15
Unit
°C
°C
mA
mW/K
mW/K
kA/m
Data Sheet 2 1999-04-01


Part Number GMRS4
Description Giant Magneto Resistive Position Sensor
Maker Infineon
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