STMicroelectronics has announced what it claims to be the industry's smallest 6-axis IMU (Inertial Measurement Unit) qualified for automotive applications with low-noise and improved output resolution. The ASM330LXH targets on-board units for electronic road tolling, other vehicle telematics systems and in-dash car-navigation solutions that require accurate and reliable inertial sensors to optimise positioning and direction, even in the absence of a strong GNSS signal.
Urban areas, tunnels and parking garages often experience weak or intermittent satellite signals due to a lack of direct visibility of the satellites. Multi-axis gyroscopes and accelerometers employ sophisticated Dead Reckoning software algorithms in order to calculate current position from a previously determined location updated by time, acceleration, and change of direction.
AEC-Q100 qualified for automotive non-safety applications, the ASM330LXH integrates a 3-axis acceleration and a 3-axis angular-rate sensor in a 3x3x1.1mm LGA package. The IMU provides selectable full-scale ranges of 2/4/8/16g and 125/245/500/1000/2000dps with 16-bit synchronised data outputs, at 6 user-selectable output data rates. Operating over an extended industrial temperature range from -40 to +85°C, the device ensures reliability and energy efficiency via 10000g shock survivability, EM reliability and power-down, low-power and normal power modes.
Anton Hofmeister, Vice President and General Manager, Custom MEMS Division, STMicroelectronics, comments: "Having built its 8" MEMS manufacturing line in 2006 and introduced the world's first automotive-qualified 3-axis MEMS gyroscope for non-safety applications in 2012, ST is fortifying its market leadership with the introduction of this 6-axis IMU that is accurate and reliable despite its small size."
Engineering samples of the ASM330LXH IMU are available now, with volume production planned for Q1 2015 and unit pricing at $6 each in 1,000 unit quantities.