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Automotive Components & Materials
GMR SENSORS
Overview
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.
Features
- 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.
Primary Applications
Rotary linear encoders, motion sensors
and position-detection sensors
The Low-Resistance Variation Rate of the GMR Membrane
GMR Principles
Output Features of the Drum-Mounted GMR Sensors
Heat Stability of the GMR Sensor
Main Specifications for GMR-Mounted Sensors
| Circuit low-resistance value | 500Ω±20% |
|---|---|
| Magnetic sensitivity field | -7000 ~ 7000A/m (-100 ~ 100Oe) |
| Operating temperature | -40°C ~ 120°C (Humidity under 95%, no condensation) |
| Median point electric potential | 2.5V±0.5V |
| Median point drift | Under ±5mV |
| Low-resistance variation rate | 10% (±7000A/m) |
| Corresponding pitch | Over 40μm |
Inquiries
Information System Components Company TEL : +81-3-5765-4463
Inquiry Form
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