AK09912C Sensors, Transducers

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The AK09912C is a three-axis combined geomagnetic sensor with a digital output. It contains a magnetic sensing unit, a processing unit, and an embedded regulator for power supply, capable of detecting both dynamic and static magnetic fields. The integrated CMOS micro-processor enables data to be outputted at high speeds and offers features such as digital filtering, built-in self-test, high accuracy, and low power consumption, making it one of the highly sought after sensors in the magnetic sensor market.

The application field of the AK09912C is wide, most commonly it is used in electronic compasses, drones, VR/AR technology, motion tracking, low power Sensor Fusion applications, GPS navigation systems, magnetic position sensing, wind direction monitoring, magnetic field detection, magnetometry, robotics and 3D printing, among many potential others. Additionally, this sensor delivers data at a much higher rate than any conventional magnetometer and has the added advantage of being able to measure any direction of a magnetic field, making it well-suited to a variety of applications.

At the core of the AK09912C lies a unique working principle, an exclusive combination of Hall effect, anisotropy of magnetoresistance (AMR), and vector processing. When a magnetic field is applied to the AK09912C, the Hall element produces an electric voltage proportional to this field, which in turn is amplified by a built-in amplifier for processing and modulation. The resultant signal is then further processed to calculate the strength and direction of the field in three dimensions. The AK09912C also employs an AMR transducer and a vector processor that combine the multiple outputs of the Hall sensing module. This combination enables the sensor to eliminate errors due to temperature and other factors, while still delivering accurate field data.

The AK09912C also comes with a built-in self-test feature to ensure that it is operating correctly. When it is turned on, the self-test assesses the sensor’s response to an applied magnetic field, and then compares the obtained data to a reference table in order to confirm the exact accuracy of the instrument.

Ultimately the AK09912C is an advanced, low-power magnetic sensor; its combination of Hall-effect, AMR, and vector processing technologies make it capable of delivering high-accuracy field data at high speed and low power. It offers an unbeatable combination of total field range accuracy and dynamic range, and its wide application field spans across industries such as consumer electronics, medical and automotive to name a few. The baseline data provided by the AK09912C can be useful in instrument calibration and calibration in other next-generation projects. As such, the AK09912C provides a reliable solution for dynamic and static magnetic field sensing, positioning, and tracking in a range of industries.

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