CES 2018: Bosch launches BMA400 ultra-low power accelerometer for wearables and IoT applications

Information Technology Press Releases Tuesday January 9, 2018 12:01
Bangkok--9 Jan--ABM
Significantly enhanced battery life for always-on devices
  • Ultra-low power consumption combined with high performance
  • Intelligent power management for battery-powered devices
  • Built-in step counter drawing only 4 μA
  • BMA400 received CES 2018 Innovation Award

At the 2018 Consumer Electronics Show (CES) in Las Vegas, USA, Bosch Sensortec is launching the BMA400, an ultra-low power acceleration sensor for wearables and Internet of Things (IoT) applications. The BMA400 draws ten times less current than existing accelerometers while delivering solid high performance. Its greatly reduced power demand significantly extends battery lifetime, especially on coin cell-powered devices. These qualities have won the BMA400 acceleration sensor from Bosch Sensortec a CES 2018 Innovation Award in the category Embedded Technologies.

Ultra-low power plus high performance

Usually, accelerometers have to choose between low power and high performance. The BMA400 now offers the best of both worlds: its combination of low power consumption, outstanding performance and advanced features is unrivalled by any other device in the market today – by a wide margin.

Due to continuous measurement, the sensor's high-quality measurement signal has precisely defined cutoff frequencies, making it very resistant to vibrations. This is particularly useful in IoT use cases such as smart home security systems, where the BMA400 can distinguish between real alarm situations like broken glass and false signals coming from random vibrations. Therefore, false alarms triggered by vibrations coming from the outside environment, such as construction works, are easily prevented.

Intelligent power management for battery-driven devices

Due to its ultra-low current step counter at only 4 µA and intelligent power management features like built-in activity recognition, the BMA400 can effectively help wearable devices such as fitness bands, smart clothes, watches and activity trackers to achieve unprecedented battery life.

To further extend battery life, the BMA400 wakes up automatically only when it detects motion and goes back into sleep mode when the motion recedes. This function finds its use especially in ultra-low-power IoT applications powered by coin cells, i.e. smart window sensors in indoor climate control or security systems.

The small size of only 2.0 x 2.0 x 0.95 mm³ and the integrated plug and play step counter make the new BMA400 acceleration sensor easy to design into various applications. This decreases time-to-market, simplifying the addition of step counting functionalities to new types of wearables such as regular watches and jewelry, to give new products the leading edge.

"The BMA400 is the perfect solution for wearable and IoT applications that aim to significantly extend battery lifetime without compromising on performance," says Dr. Stefan Finkbeiner, CEO of Bosch Sensortec. "By substantially extending the battery replacement interval, the BMA400 gives the end-user improved reliability, ease of use and a greater peace of mind."

Additional product features

With its built-in voltage regulator, the BMA400 delivers stable performance over a wide supply voltage range. It offers flexible device tuning for power consumption, noise and ODR (output data rate) parameters. The BMA400 has a current consumption of 14 μA at highest performance, continuous measurement and a noise density of 220 μg/√Hz. This falls to just 1 μA and below in the ultra-low power self-wake-up mode. The new sensor further includes a large FIFO of 1 KB. Further information on the BMA400 can be found on the Bosch Sensortec YouTube channel: http://bit.ly/2qlvhnn and on the Bosch Sensortec website: http://bit.ly/2qhP3QK

Availability
The BMA400 will be available for OEMs and distributors starting in June 2018.

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