6-axis inertial measurement unit shrinks to 3x3x1.1mm

October 30, 2014 // By Julien Happich
STMicroelectronics has announced what the company claims to be the industry's smallest 6-axis Inertial Measurement Unit (IMU) qualified for Automotive applications, with low-noise and improved output resolution.

The ASM330LXH IMU is fit for in-dash car-navigation solutions that require accurate and reliable inertial sensors to optimize positioning and direction, even in the absence of a strong GNSS (Global Navigation Satellite System) signal. Multi-axis gyroscopes and accelerometers, like the 6-axis ASM330LXH, empower sophisticated Dead Reckoning software algorithms that calculate current position from a previously determined location updated by time, acceleration, and change of direction. The new device also targets on-board units for electronic road tolling and other vehicle telematics systems.

Built on the Company’s fab on its robust 8” manufacturing line using the well-proven proprietary THELMA micromachining process technology to integrate on the same silicon both a 3-axis acceleration and 3-axis angular-rate sensor (gyroscope), the device comes in a 3x3x1.1mm Land Grid Array package. It offers selectable full-scale ranges of 2/4/8/16g and 125/245/500/1000/2000dps with 16-bit synchronized data outputs, at 6 user-selectable Output Data Rates, for both the gyroscope and accelerometer. An SPI digital output allows the trouble-free transport of sensor data to the microcontroller, and I2C is also supported. Energy efficiency is assured via power-down, low-power, and normal power modes.

AEC-Q100 qualified for automotive non-safety applications, the ASM330LXH is a robust sensor [up to 10000g shock survivability] that operates over an extended industrial temperature range of -40°C to +85°C.

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