Deep Di Semiconductor's nine-axis sensor product line three-axis magnetometer ST480MQ

21ic News The first three-axis MEMS magnetic sensor of Shendi Semiconductor (Shanghai) Co., Ltd. - ST480MQ officially unveiled. With the increasing popularity of multi-axis sensors in consumer electronics terminals, Shendi Semiconductor has expanded its product line, making it the first three-axis MEMS magnetic sensor in China to use Hall effect technology (Hall).

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Following 10 days ago, Shendi Semiconductor released a single-axis automotive-grade MEMS gyroscope product, and Shendi re-magnetic sensor. In this way, the company's product line has covered three-axis consumer-grade, single-axis automotive-grade MEMS gyroscopes and three-axis MEMS magnetic sensors, and further built a deep six-axis, nine-axis sensor solution.

STM480Q product physical map

STM480Q product physical map

The main application areas of MEMS magnetic sensors include electronic compass, bit-based services and GPS blind spot-assisted positioning, which are widely used in smartphones, tablets, game controllers and GPS navigation devices. ST480MQ is mainly for mobile phones, tablets and other mobile terminal markets.

Due to the increasingly popular size of consumer terminals, the size, integration and reliability of MEMS sensors are becoming more and more stringent, and multi-sensor fusion solutions are also inevitable. After the introduction of the ST480MQ, the company's self-made products have covered gyroscopes and magnetic sensors, moving forward to the six-axis and nine-axis inertial combination solutions.

- Hall's technical advantage

The adoption of Hall technology is the development direction of the current mainstream MEMS magnetic sensor. Hall technology magnetic sensors have the advantages of small size, low power consumption, low cost, and simple interface circuit, which is especially suitable for the measurement of strong magnetic fields. At the same time, the use of magnetic collector (IMC) technology can largely compensate for the weakness of the Hall sensor, sensitivity, measurement accuracy and response time can be greatly improved, and enhance the function of the on-chip processing circuit, fully meet the needs of consumer electronics .

Another great advantage of Hall technology is that it can integrate magnetic sensor components and ASICs on the same chip, enabling a single-chip solution that takes advantage of single-chip, high integration, high reliability, ultra-small package, and low cost. Single-chip solutions are not yet possible with anisotropic magnetoresistance (ARM).

- Product characteristics and performance indicators

Measuring range: +/-48 gauss

Operating temperature range: -40 degrees Celsius ~ 85 degrees Celsius

Resolution: 0.3 uT/LSB (Z-axis), 0.2 uT/LSB (X/Y axis)

Working current: 420 uA

Standby current: 2 uA

Size: 3 × 3 × 0.85mm

Package form: QFN

IIC/SPI interface

16bit ADC

Engineering samples have been available for the ST480MQ and volume production was achieved in the fourth quarter of 2012. The ST480MQ is a 3×3×0.85mm QFN package. Deep Di also said that the size is 2×2×0.85mm. The ST480MB in BGA package will also be released in the fourth quarter.

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