IIS2DULPX Digital 3-Axis Linear Accelerometer

STMicroelectronics IIS2DULPX is an intelligent, digital 3-axis linear accelerometer whose MEMS and ASIC have been expressly designed to combine the lowest supply current possible with features such as always-on antialiasing filtering, a finite state machine (FSM) and machine learning core (MLC) with adaptive self-configuration (ASC), and an analog hub/Qvar sensing channel.

The FSM and MLC with ASC deliver outstanding always-on, edge processing capabilities to the IIS2DULPX, while the analog hub/Qvar sensing channel defines a new degree of system optimization. The IIS2DULPX MIPI I3C® target 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 device has user-selectable full scales of ±2 g/±4 g/±8 g/±16 g and is capable of measuring accelerations with output data rates from 1.6 Hz to 800 Hz. The IIS2DULPX has a dedicated internal engine to process motion and acceleration detection, including free-fall, wake-up, single/double/triple-tap recognition, activity/inactivity, and 6D/4D orientation.

The device is available in a small, thin, plastic land grid array (LGA) package, and it is guaranteed to operate over an extended temperature range from -40°C to +105°C.

Features

• 3-axis accelerometer with digital output
• ±2 g/±4 g/±8 g/±16 g programmable full-scale
• Output data rate from 1.6 Hz to 800 Hz; bandwidth up to 400 Hz
• High-speed I²C/SPI/MIPI I3C digital output interface
• Ultralow supply current and low noise (down to 220 μg/√Hz)
• Four operating modes
• Embedded machine learning core (MLC)
• Programmable finite state machine (FSM)
• Adaptive self-configuration (ASC)
• 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)
• Embedded FIFO
• Integrated analog hub/Qvar sensing channel
• Extended operating temperature range from -40°C to +105°C
• Supply voltage range from 1.62 V to 3.6 V
• Independent I/O supply (1.62 V to 3.6 V) for I²C and SPI interfaces
• Small package: 2.0 mm x 2.0 mm x 0.74 (max) mm LGA 12-lead
• 10,000 g high shock survivability
• ECOPACK and RoHS compliant