News Release

Joint development of high accuracy TMR 3-axis magnetometer with TDK Corporation

High accuracy TMR 3-axis magnetometer
AR、VR, MR, Gesture Recognition and Indoor Navigation
Game Controller, HMD, Smartphone and Tablet.
High accuracy TMR 3-axis magnetometerTMR

Development Background

AKM and TDK Corporation have jointly developed a highly accurate 3-axis magnetometer that combines an extremely sensitive Tunnel Magneto-Resistive (TMR) element developed by TDK and an advanced electronic compass ASIC designed by AKM in a small package.  The new TMR magnetometer on a chip, which has a miniature dimensions of just 1.6 mm x 1.6 mm x 0.6 mm, features the industry’s lowest RMS noise of just 40 nT-rms and a very low current consumption of only 40 µA at an output data rate of 100 Hz.

Thanks to its high sensitivity of 10 nT/LSB, the magnetic sensor can detect minute changes in magnetic fields very precisely, enabling the highly accurate detection of both position and orientation with the help of the Earth's magnetic field or a magnetic field generator.  These unique characteristics make the TMR magnetometer ideal for compact electronic devices such as smartphones, tablets, game console controllers and all kinds of wearable devices, as well as other applications that demand high position and orientation precision such as virtual, augmented or mixed reality (VR, AR, and MR) or indoor navigation.  The new 3-axis magnetic sensor is also suitable for integration into IoT devices, for which strong market growth is expected.

The new sensor will be on display at the booths of both AKM and TDK at the Consumer Electronics Show 2018 (CES 2018), the world’s largest electronics exhibition, which will take place in Las Vegas, USA, from January 9 to 12, 2018.


● Combines AKM's advanced electronic compass ASIC with TDK's high accuracy TMR element.
● High sensitivity of 10 nT/LSB.
● Industry's lowest RMS noise of just 40 nT-rms

Key data

High accuracy TMR 3-axis magnetometer
Current consumption
(@100 Hz ODR) [μA]
Noise [nT-rms typ.]40
Sensitivity [nT/LSB]10
Measurement range [μT]±1200
Output bit [bits]18
Package size [mm]1.6 x 1.6 x 0.6

Introduction of new technology

1. Exhibition : Consumer Electronics Show 2018 (CES 2018)
2. Venue : Las Vegas Convention & World Trade Center (LVCC)
3. Dates : January 9 to 12, 2018
4. Location :
AKM:Venetian Suites 30-209, 30-211
TDK:Booth 30325, LVCC

About TDK Corporation


TDK Corporation is a leading electronics company based in Tokyo, Japan.  It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products.  TDK's portfolio includes passive components, such as ceramic, aluminum electrolytic and film capacitors, ferrites and inductors, high-frequency products, and piezo and protection components, as well as sensors and sensor systems and power supplies.  These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda.  TDK's further main product groups include magnetic application products, energy devices, and flash memory application devices.  TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics.  The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America.  In fiscal 2017, TDK posted total sales of USD 10.5 billion and employed about 100,000 people worldwide.

* Information on this page is current on the date of press release.
* AKM is trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
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