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STMicroelectronics Introduces New High-Precision MEMS Sensors Supporting Automotive Precise Position

* Advanced inertial sensors provide high-precision dead reckoning for car navigation, in-vehicle information services and highly automated driving systems

* Single-chip integrated 3-axis accelerometer and 3-axis gyroscope, using STMicroelectronics' unique MEMS technology, leading product quality, supply chain security assurance, eliminating customer worries

* The sensor has been adopted by Magneti Marelli's new advanced in-vehicle information service system

ST introduces the automotive-grade six-axis inertial sensor ASM330LHH, which provides ultra-high resolution motion tracking for advanced in-vehicle navigation and information service systems.

The ASM330LHH meets the continuity and accuracy requirements of automated service for vehicle positioning. When satellite signals are blocked, the ASM330LHH can provide sensor data for advanced dead reckoning algorithms to calculate the precise position of the vehicle. The blocking of satellite signals usually occurs in high-rise urban streets, tunnels, covered roads, garages or dense forests. The ASM330LHH's advanced low-noise, temperature-stable design enables reliable in-vehicle information services such as road and bridge electronic toll collection, remote diagnostics and electronic rescue. Precision six-axis inertial sensing data also meets the needs of advanced autonomous driving systems.

Magneti Marelli has selected the ASM330LHH for its advanced in-vehicle information service system, which will also become the original standard for future models of global automakers.

Like other MEMS sensors from STMicroelectronics, STMicroelectronics controls the entire manufacturing process of the ASM330LHH. From sensor design to wafer fabrication, packaging, calibration, and supply, end-to-end full-range control enables ST to develop high-performance sensors and provide customers with a robust and responsive supply chain that is tightly executed Online screening quality control plan.

Andrea Onetti, vice president of analog, MEMS and sensor products at STMicroelectronics, said: " STMicroelectronics is the number one MEMS sensor manufacturer in the automotive non-safety market, such as car navigation and information service systems [1], our latest A generation of inertial sensors - the automotive-grade ASM330LHH enables precise positioning, making car driving safer and smarter."

ASM330LHH details

With an operating temperature range of up to 105 °C, the electronic controller is no longer limited by the mounting position and the designer can mount it in a high temperature position, for example, in the roof smart antenna or near the engine compartment.

When positioning is only dependent on the sensor, ultra-low noise can achieve higher measurement resolution by minimizing the integration error;

High linearity and built-in temperature compensation mechanism, no need to add any external compensation algorithm in the working range;

The lowest power consumption of similar products, when the battery life is critical, can optimize power management efficiency;

Passed the AEC-Q100 automotive-grade robustness standard certification;

Based on proven STMicroelectronics' unique ThELMA [2] MEMS process, 3-axis accelerometers and 3-axis angular rate sensors (gyros) can be integrated on the same chip, yielding chip yield, quality and reliability Optimal level

The electronic interface uses ST's 130nm HCMOS9A technology to integrate a signal chain shared by two sensors on the same die.

The development kit includes a reference design, as well as ST's TeseoTM satellite positioning module and related software. The abiting element estimation algorithm attached to the Teseo III GNSS receiver chipset already supports ASM330LHH, which can generate high-precision output for autonomous navigation;

The slim, compact size of the 3mm x 2.5mm x 0.83mm does not materially affect the size of any onboard module;

In a contact array (LGA) package

For more information, please visit STMicroelectronics' official website:

[1] Source: IHS Market Tracker Automotive MEMS H1 2017

[2] Microgyroscope and accelerometer chip manufacturing process Thick epitaxial layer process (ThELMA) is a micromachining technology that builds structures and interconnects by integrating various layers of polysilicon with different thicknesses.