LIS2DUX12 Ultra-Low-Power MEMS Accelerometer

STMicroelectronics' LIS2DUX12 is a smart, digital, 3-axis linear accelerometer whose MEMS and ASIC have been expressly designed to combine the lowest current consumption possible with features such as always-on anti-aliasing filtering, a finite state machine (FSM), and machine learning core (MLC) with adaptive self-configuration (ASC).

The FSM and MLC with ASC deliver outstanding always-on, edge processing capabilities to the LIS2DUX12. The LIS2DUX12 MIPI I³C® secondary interface and embedded 128-level FIFO buffer complete a set of features that make this accelerometer a reference in terms of system integration from the standpoint of the bill of materials, processing, or power consumption. The LIS2DUX12 has user-selectable full scales of ±2 g, ±4 g, ±8 g, and ±16 g and is capable of measuring accelerations with output data rates from 1.6 Hz to 800 Hz.

The LIS2DUX12 has a dedicated internal engine to process motion and acceleration detection, including free-fall, wake-up, single/double/triple-tap recognition, activity/inactivity, 6D/4D orientation, and a configurable pedometer. The LIS2DUX12 is available in a small thin plastic land grid array package (LGA), and is guaranteed to operate over an extended temperature range from -40°C to +85°C.

Features

• Supply voltage range from 1.62 V to 3.6 V
  • Independent IO supply (1.62 V to 3.6 V) for I²C and SPI interfaces
  • Independent IO supply (extended range: 1.08 V to 3.6 V) for MIPI I³C interface
• Four operating power modes
• Ultra-low power consumption
  • High-performance mode with anti-aliasing filter: 10.8 μA
  • Low-power mode with anti-aliasing filter: 6.2 μA
  • Ultra-low-power mode: 2.7 μA
  • Power-down: 0.01 μA
• Low noise down to 220 μg/√Hz
• ±2g/±4g/±8g/±16g programmable full-scale
• ODR from 1.6 Hz to 800 Hz
• Embedded machine learning core
• Programmable finite state machine
• Adaptive self-configuration (ASC) based on the sensor processing output (FSM/MLC)
• Embedded temperature sensor
• Embedded FIFO: up to 512 samples of accelerometer and temperature data in high resolution or up to 768 samples of acceleration data at low resolution
• High-speed I²C/SPI/MIPI I³C digital output interface
• Embedded digital functions (free-fall, wake-up, single/double/triple-tap recognition, activity/inactivity, 6D/4D orientation)
• Advanced pedometer, step detector and step counter
• Significant motion detection, tilt detection
• Self-test
• Small package: 2.0 mm x 2.0 mm x 0.74 mm (max) LGA 12-lead
• 10,000 g high shock survivability
• ECOPACK and RoHS compliant