Three-axis magnetic sensor is small for drone use

Claimed to provide the industry’s highest accuracy, lowest noise and lowest power consumption, the MMC5883MA three-axis magnetic sensor uses proprietary MEMS technology with advanced mixed-signal processing, says MEMSIC.

The MMC5883MA joins the Anisotropic Magneto Resistive (AMR)-based magnetic sensor family, and is offered in an industry standard small LGA package.

The company believes that its design architecture and optimised processes, make the ±8 Gauss, full scale range MMC5883MA reliable for industrial and drone system design, where development engineers need to provide stability and direction sensing.

The MMC5883MA provides 16bit operation over ±8 Gauss with linearity of ±0.2 per cent full scale range, hysteresis of 0.2 per cent full scale range and repeatability of 0.2 per cent on each axis. According to the company, the high performance enables faster algorithms for hard and soft iron interference correction, delivering more precise and faster heading determination.

The low profile LGA package measures 3.0 x 3.0 x 1.0mm. and operates over -40 to +85 degree C from a supply voltage of 2.16 to 3.6V. Current consumption is just 20microA at seven samples per second data rate. The noise level is only 0.4mGauss total RMS noise.

The MC5883MA incorporates on-chip signal processing and an integrated I2C 400kHz digital interface for direct connectivity to the system microprocessor.

The sensor is in production now; devices mounted on prototyping boards and a universal evaluation board are also available.

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