ADXL345 is a three-axis digital accelerometer produced by Analog Devices. It has a measurement range of ±2/4/8/16g and a working voltage range of 1.8V to 3.6V. It supports SPI and I2C interfaces and has very low power consumption and sensitivity.
The ADXL345 is a small, thin, low‑power three‑axis digital accelerometer with selectable measurement ranges of ±2, ±4, ±8, or ±16 g. It offers ultra‑low power consumption, built‑in motion detection functions (tap, double‑tap, activity/inactivity, free‑fall), a 32‑level FIFO, and both SPI and I²C digital interfaces.
The document provides full electrical specifications, absolute maximum ratings, pin descriptions, functional block diagrams, and detailed information on power sequencing, low‑power, auto‑sleep, and standby modes, enabling designers to integrate the sensor into mobile devices, gaming controllers, fitness equipment, and other applications.
| Measurement Range | +2, 4, 8, 16 g |
|---|---|
| Output Resolution (+16 g) | 13 Bits |
| Operating Voltage Range (Vs) | 2.0 V – 3.6 V |
| Supply Current (Data Rate >100 Hz) | 130 pA |
| Operating Temperature Range | -40 °C to +85 °C |
| Shock Survival | 10,000 g |
The device operates from 2.0 V to 3.6 V supply voltage.
It measures acceleration on three axes.
The ADXL345 can survive shocks up to 10,000 g.
The device supports Standby Mode, Auto‑Sleep Mode, and a Low‑Power Mode that reduces current consumption.