Please check the table below.
| AMR | Hall | |
| Material | Ferromagnetic thin film metal | Semiconductor |
| Operating principle | Magnetoresistive effect | Hall effect |
| Magnetic sensing direction | Horizontal (parallel) magnetic field change with relative to the sensor film | Magnetic field change perpendicular to the element chip |
| N/S discrimination | Not possible alone | Possible |
| Input resistance | Several tens of Ω to several tens of kΩ (Depends on chip size. Customizable) | Several 100 Ω to 1 kΩ |
| Output voltage | Saturates around 4kA/m | Almost linear output |
Constant voltage source, constant current source, intermittent drive power supply can be used within the rated range.
Constant current drive is ideal for canceling temperature characteristics.
It is about 400 kHz.
We can customize it according to the customer’s request. We can handle everything from design to manufacturing, even for small lots.
* However, it is limited to Japan.
The resistance value, output voltage, and midpoint potential fluctuate change as the temperature change. See the product datasheet for details.
As an approximate number
Flip chip product: Storage range -40 to 100°C Operating range -30 to 90°C
Mold PKG product: Storage range -50 to 130°C Operating range -40 to 125°C
See the product datasheet for details.
When Vcc=5V, the output is about 40mV in saturation magnetic field.
See the magnetic field strength-output voltage characteristic curve in the product datasheet. Provide an amplifier circuit if necessary.
Although it depends on the element, it will be less than 10V.
See the product datasheet for details.
Our AMR sensor is suitable for detecting magnetic fields of more than 10mT, and is not suitable for detecting weak magnetic fields such as geomagnetism.
The current consumption of the AMR sensor = the voltage applied to the sensor element / the input resistance value of the sensor element.
It’s possible. Please contact us using the form below.
We handle evaluation magnets.
Please see the link below for details.
For mass production, it is possible to provide a custom product as a set of AMR sensors.
≪Click here for details on magnets for evaluating AMR sensors≫
KG1302-01 corresponds to a magnetization pitch of 200μm.
Customization is also possible. For more information, please contact us using the form below.
We can also manufacture and sell custom magnets. Please contact us here.
* We do not sell the magnet only without sensors.