This document describes the features and characteristics of the 3-axis ultralow power digital accelerometer ADXL346, including ultralow power consumption, selectable resolution, embedded memory management system, and various detection functions.
The ADXL346 is a small, thin, ultralow‑power 3‑axis accelerometer offering high resolution (up to 13‑bit at ±16 g) and a variety of motion‑detect functions such as tap, free‑fall, activity/inactivity, and orientation detection. It operates from 1.7 V to 2.75 V and provides both SPI (3‑ and 4‑wire) and I²C digital interfaces, making it suitable for mobile devices, medical instrumentation, gaming, and industrial applications.
The datasheet details the device’s specifications, including selectable measurement ranges (+2, +4, +8, +16 g), power consumption as low as 23 µA in measurement mode, a 10,000 g shock rating, and a 16‑terminal LGA package (3 mm × 3 mm × 0.95 mm). Pin assignments, typical performance curves, and application notes are provided to aid designers in integrating the sensor into their systems.