STMicroelectronics IIS2DULPX Digital 3-Axis Linear Accelerometer

STMicroelectronics IIS2DULPX Intelligent Digital 3-Axis Linear Accelerometer is an accelerometer whose MEMS and ASIC have been designed to combine the lowest supply current possible. It has features of a finite state machine (FSM), always-on antialiasing filtering, and a machine learning core (MLC) with an analog hub/Qvar sensing channel and adaptive self-configuration (ASC). The FSM and MLC with ASC deliver outstanding, always-on, edge processing capabilities to the IIS2DULPX. The analog hub/Qvar sensing channel defines a new degree of system optimization. The IIS2DULPX MIPI I3C^® target embedded 128-level FIFO buffer and interface 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 ±2g/±4g/±8g/±16g and is capable of measuring accelerations with output data rates from 1.6Hz to 800Hz. The STMicroelectronics IIS2DULPX features 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 is guaranteed to operate over an extended temperature range from -40°C to +105°C.

Features

3-axis accelerometer with digital output
±2g/±4g/±8g/±16g programmable full-scale
Output data rate from 1.6Hz to 800Hz, bandwidth up to 400Hz
High-speed I²C/SPI/MIPI I3C digital output interface
Ultra-low supply current and low noise (down to 220μg/√Hz)
Four operating modes
- 9.3μA high-performance (HP) mode with anti-aliasing filter
- 6.5μA low-power (LP) mode with anti-aliasing filter
- 3μA ultra-low-power (ULP) mode
- One-shot mode
Embedded machine learning core (MLC)
Programmable finite state machine (FSM)
Adaptive self-configuration (ASC) based on the sensor processing output (FSM/MLC)
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, and tilt detection)

Embedded FIFO with up to 128 samples of accelerometer and temperature data (or analog hub/Qvar) or 256 samples of accelerometer data at low resolution
External clock input to allow perfect synchronization with multiple sensors or with a controller
Integrated analog hub/Qvar sensing channel
Embedded temperature sensor
Extended -40 to +105°C operating temperature range
supply voltage range
Independent I/O supply (1.62V to 3.6V) for I²C and SPI interfaces
Independent I/O supply (1.08V to 3.6V extended range) for MIPI I3C interface
2.0mm x 2.0mm x 0.74mm (maximum) LGA 12-lead small package
10000g high shock survivability
ECOPACK and RoHS-compliant