今年11月，意法半导体电磁罗盘加速成员之一LSM303C被MEMS产业协会（MEMS Industry Group）选为年度设备，它改进了该类产品的功耗和大小。
STMicroelectronics recently introduced itsLSM303D accelerometer and magnetometer combo module to Chinese smartphoneleader Xiaomi (Mi1S), known as the country’s answer to Apple.
“Our MEMS technology continues to raise the bar in every quarter:power consumption, performance, price, and physical size,” said BenedettoVigna, executive vice president and general manager of the analog, MEMS, andsensors group at STMicroelectronics, in a statement. “This, in turn, allowsdynamic new companies such as Xiaomi to raise the bar in their own markets.”
STM developed its family of eCompassesaround the principal of magneto resistance (MR) -- where a material changes thevalue of electrical resistance when an external magnetic field is applied -- todecrease power consumption. Devices, including the recently released LSM303,use MR “matching or exceeding the performance of competitive devices in modulesize, full-scale resolution and noise,” the release stated.
The LSM303 accurately measures thedirection and magnitude of external magnetic fields, while the module’saccelerometer compensates for tilt to ensure an accurate compass heading whenportable devices are inclined. LSM303 combines a 3-axis magnetic-field sensorand a 3-axis accelerometer in a single tiny 2x2x1 mm module.
“This is a peripheral piece that… could be useful in location-basedservices, if you were walking around in a mall or were driving and wanted toknow where you were,” an ST spokesman told EE Times.
In November, the LSM303C, a member of thesame family of devices, was selected as device of the year by the MEMS IndustryGroup for its improved power consumption and size.
“In smartphones and other mobile devices, every milliwatt matters,”said Vigna. “The ST device meets minimal size constraints and allowssignificant reductions in power consumption without compromising performance inother areas. These advantages help manufacturers to provide mobile devices thatmeet customer expectations while minimizing the drain on the world’sresources.”
The LSM303D is already shipping, and STplans to introduce new models shortly.