MEMS accelerometer can change operating mode on-the-fly

For industrial applications, STMicroelectronics has combined high measurement resolution and low power in the IIS2DLPC3, three-axis MEMS accelerometer for industrial applications.

The accelerometer can change operating mode on-the-fly, from low power to high resolution, enabling high-accuracy measurements within a limited energy budget. The sensor can provide continuous contextual awareness to wake the host system when action is required and take highly accurate measurements before returning to low power operation.

Users can build longer-lasting battery-powered industrial sensor nodes or medical devices, tamper-proof smart meters, and smart power-saving or motion-activated functions. Low power consumption enables smart accessories for industrial machinery or robotics to be created as convenient battery-powered add-on modules that require minimal integration effort, says STMicroelectronics.

There is a choice of four reduced-power modes which lets users optimise power consumption in different application scenarios. Very low noise, down to 90μg/√Hz in high-resolution mode, permits what the company describes as “outstanding measurement accuracy”. Additional features of the IIS2DLPC give users extra control over power consumption, including easy-to-use one-shot data conversion and a 32-level FIFO for storing batched data to reduce CPU intervention. An integrated temperature sensor and built-in self-test capability are also provided.

For industrial applications, the IIS2DLPC is specified over an extended temperature range from -40 to +85 degrees C and covered by ST’s 10-year product-longevity scheme ensuring long-term availability.

The IIS2DLPC is in production now, packaged as a 2.0 x 2.0 x 0.7mm plastic land grid array (LGA) device.

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