This document describes the features and characteristics of the small, low power, 3-axis ±16g accelerometer ADXL326.
The ADXL326 is a small, low‑power, 3‑axis accelerometer with signal‑conditioned voltage outputs. It offers a measurement range of up to +16 g, low supply current (350 pA typical), and a compact 4 mm × 4 mm × 1.45 mm LFCSP package. Bandwidth can be adjusted per axis using external capacitors, making it suitable for motion‑, tilt‑, and shock‑sensing applications such as mobile devices, gaming systems, and health devices.
The datasheet details electrical specifications, pin configuration, self‑test procedures, and recommended PCB layout and soldering profiles. It also includes ordering information for the ADXL326 variants and provides typical performance curves for sensitivity, noise, and temperature coefficients.
| Measurement Range | +16 g (typical) / +19 g (max) |
|---|---|
| Sensitivity (typical) | 57 mV/g at Vs=3 V |
| Zero‑g Voltage (X/Y) | 1.5 V (typical) at Vs=3 V |
| Zero‑g Voltage (Z) | 1.5 V (typical) at Vs=3 V |
| Noise Density | 300 µg/√Hz rms |
| Bandwidth (X/Y) | 0.5 Hz – 1600 Hz (no external filter) |
| Bandwidth (Z) | 0.5 Hz – 550 Hz (no external filter) |
| Operating Voltage Range | 1.8 V – 3.6 V |
| Supply Current (Vs=3 V) | 350 µA |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Dimensions | 4 mm × 4 mm × 1.45 mm LFCSP |
The ADXL326 measures acceleration up to +16 g typical and +19 g maximum.
It operates from a single supply of 1.8 V to 3.6 V.
Bandwidth is set per axis by external capacitors Cx, Cy, and Cz, giving 0.5 Hz‑1600 Hz for X/Y and 0.5 Hz‑550 Hz for Z.