News Release

- New Product Information -

AKM is now sampling the AK09940, a world class* high precision 3-axis magnetic sensor

Product Name
3D Magnetic Sensor
High Precision 3-axis Magnetic Sensor
Augmented Reality/Virtual Reality (AR/VR) Devices, Wearable Devices, Magnetic Metal Particle Testers, Magnetic Mapping


The AK09940 enables measurement of minute magnetic signals normally drowned in noise with this ultra-low noise 3-axis sensor. Conventional 3-axis magnetic sensors have been used for position tracking applications. However, there are cases when sufficient performance is not possible due to magnetic field noise. World class* ultra-low noise 3-axis sensing from the AK09940 resolves this problem, increasing magnetic position tracking accuracy for AR and VR.
The AK09940 is ideal for magnetic particle testing and metal contamination detection with triaxial magnetic measuring, which measures wet field, small changes, and distortion in magnetic-fields with high precision. In addition, the AK09940 has very low power consumption current suitable for triaxial measurement in wearable and IoT devices with small batteries.
Asahi Kasei Microdevices, (AKM), developed a new 3-axis sensing solution with the highly accurate AK09940 based on previous electronic compass 3-axis sensing solutions.
*  According to AKM’s research on May 2018.

Main Specifications

High Precision 3-axis Magnetic Sensor
Analog Power Supply Vdd+1.7V to +1.98 [V]
Digital Power Supply Vid+1.65V to Vdd [V]
InterfaceI2C & 4-wire SPI
Current Consumption (@100Hz ODR) (Power Mode) 40, 60, 110, 210 [μA typ.]
Noise (Power Mode)70, 60, 50, 40 [nT-rms typ.]
Sensitivity10 [nT/LSB]
Measurement Range±1200 [μT]
Output Bit18 [bit]
Package Size1.6 x 1.6 x 0.6 [mm]
* Information on this page is current on the date of press release.
* AKM is a trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.

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