This document is an introduction to ADXL346 ultra-low power digital accelerometer. This accelerometer has ultra-low power consumption and can be used for four-dimensional and six-dimensional orientation detection. It also has single-tap/double-tap detection, activity/inactivity monitoring, and free fall detection.
The ADXL346 is a 3‑axis digital accelerometer designed for mobile and industrial applications. It offers ultralow power consumption, selectable measurement ranges, and both SPI (3‑ and 4‑wire) and I²C interfaces. The device includes features such as tap detection, activity monitoring, free‑fall detection, and orientation sensing.
The datasheet provides detailed specifications, absolute maximum ratings, package information, pin descriptions, interrupt handling, and recommended PCB layout and soldering guidelines. It also lists ordering options and evaluation board references for system integration.
| Measurement Range | ±2, ±4, ±8, ±16 g |
|---|---|
| Supply Voltage Range | 1.7 V to 2.75 V |
| Power Consumption (measurement mode) | 23 µA |
| Power Consumption (standby mode) | 0.2 µA |
| Operating Temperature Range | −40 °C to +85 °C |
| Shock Survival | 10,000 g |
| Package Size | 3 mm × 3 mm × 0.95 mm LGA |
It operates from 1.7 V to 2.75 V supply voltage.
The device supports both SPI (3‑ and 4‑wire) and I²C digital interfaces.
The accelerometer can be set to ±2 g, ±4 g, ±8 g, or ±16 g.
It measures acceleration on three axes (X, Y, and Z).