| GMR
SENSORS |
This product is also featured
in the section "Automotive Components & Materials"
and "Sensor Components". |
GMR Sensors Surface-mounted
GMR Sensors
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| Overview |
Features |
Hitachi Metals has developed a giant
magneto-resistive (GMR) magnetic sensor for use in magnetic rotary
encoders and linear encoders, responding to the trend toward thin
pitches. The Company also has a lineup of surface-mounted GMR sensors
appropriate for the move toward miniaturization.
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- Hitachi Metals is developing sensors using GMR devices made
of new materials. The GMR sensor has three times the output of
Hitachi Metals' AMR sensors.
- The GMR Sensor operates within a range of
-40°C ~ 120°C.
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| Primary
Applications |
Rotary linear encoders, motion sensors
and position-detection sensors
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| The
Low-Resistance Variation Rate of the GMR Membrane |
|
 |
| GMR
Principles |
When an external magnetic field is added and the direction of the
magnetism of each magnetic layer becomes unified, the elemental
electrical resistance decreases.
|
|
| Output
Features of the Drum-Mounted GMR Sensors |
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|
| Heat
Stability of the GMR Sensor |
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|
| Main
Specifications for GMR-Mounted Sensors |
| Circuit low-resistance value |
500  20% |
| Magnetic sensitivity field |
-7000 ~ 7000A/m (-100 ~ 100Oe) |
| Operating temperature |
-40°C ~ 120°C
(Humidity under 95%, no condensation) |
| Median point electric potential |
2.5V0.5V |
| Median point drift |
Under 5mV |
| Low-resistance variation rate |
10% (7000A/m) |
| Corresponding pitch |
Over 40 m |
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| Inquiries |
Information System Components Company
Tel.: +81-3-5765-4583
Inquiry Form |
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