IIS2DULPXTR [STMicroelectronics]

The 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 a 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 1.6 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.

• 3-axis accelerometer with digital output
• ±2g/±4g/±8g/±16g 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
  • High-performance (HP) mode with antialiasing filter: 9.3 μA
  • Low-power (LP) mode with antialiasing filter: 6.5 μA
  • Ultralow-power (ULP) mode: 3 μA
  • 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, tilt detection)
• Embedded FIFO: 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 operating temperature range from -40 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
• Independent I/O supply (extended range: 1.08 V to 3.6 V) for MIPI I3C^® interface
• Small package: 2.0 x 2.0 x 0.74 (max) mm LGA 12-lead
• 10000 g high shock survivability
• ECOPACK and RoHS compliant