STMicroelectronics ASM330LHH precision MEMS sensor for automotive navigation

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STMicroelectronics has introduced the automotive-grade ASM330LHH six-axis inertial sensor for super-high-resolution motion tracking in advanced vehicle navigation and telematics applications.

Serving demands for continuous vehicle location to support automated services, the product lets advanced dead-reckoning algorithms calculate precise position from sensor data if satellite signals are blocked. This often happens in urban canyons, tunnels, covered roadways, parking garages or dense forests. Its low-noise, temperature-stable design enables dependable telematics services such as e-tolling, tele-diagnostics and e-Call assistance. Precision inertial data in six axes also meets the needs of automated-driving systems.

A temperature range of up 105°C gives designers the freedom to locate electronic controls in hot areas such as in smart antennas on the vehicle roof or near the engine compartment. Ultralow noise allows good measurement resolution by minimising integration errors when positioning is reliant on sensors only. High linearity and built-in temperature compensation eliminate any need for external compensation algorithms over its operating range.

The product features low power consumption, with features for optimising power management if battery usage becomes crucial. It has been qualified according to the AEC-Q100 automotive-grade robustness standard.

The device is built on ST’s ThELMA MEMS process technology, which enables integration of both the 3-axis accelerometer and 3-axis angular-rate sensor (gyroscope) on the same silicon for optimum yield and quality. The electronic interface integrates the signal chain for both sensors on a single die using the company’s 130 nm HCMOS9A technology.

The unit is a tiny, low-profile, 3 x 2.5 x 0.83 mm device for minimal impact on the size of any onboard module. It is packaged as a leadless land grid array (LGA) device.

For more information: www.st.com/asm330lhh-pr.