ADXL344 Series

3-Axis, ±2g/±4g/±8g/±16gUltralow Power Digital Accelerometer

Catalog

3-Axis, ±2g/±4g/±8g/±16gUltralow Power Digital Accelerometer

Part	Axis [z]	Axis [y]	Axis [x]	Operating Temperature [Max]	Operating Temperature [Min]	Type	Mounting Type	Acceleration Range	Acceleration Range [Min]	Acceleration Range [Max]	Sensitivity (LSB/g)	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Bandwidth [Max]	Bandwidth [Min]	Package / Case	Features	Sensitivity	Sensor Type	Embedded	Interface	Sensing Range	Utilized IC / Part	Supplied Contents
Analog Devices ADXL344ACCZ-RL	Z	Y	X	85 °C	-40 °C	Digital	Surface Mount	4 g 8 g 16 g	-2 g	2 g	32 LSB/g 256 LSB/g	16-LGA (3x3)	1.7 V	2.75 V	I2C SPI	1.6 kHz	0.05 Hz	16-VFLGA	Adjustable Bandwidth
Analog Devices EVAL-ADXL344Z-M													1.7 V	2.75 V						32 LSB/g 64 LSB/g 128 LSB/g 256 LSB/g	Accelerometer 3 Axis		I2C Serial SPI	2 g 4 g 8 g 16 g	ADXL344	Board(s) Cable(s)

Catalog

3-Axis, ±2g/±4g/±8g/±16gUltralow Power Digital Accelerometer

Key Features

• Multipurpose accelerometer with 10- to 13-bit resolution for use in a wide variety of applications

• Digital output accessible via SPI (3- and 4-wire) and I2C

• Built-in motion detection features make tap, double-tap, activity, inactivity, orientation, and free-fall detection trivial user-adjustable thresholds interrupts independently mappable to two interrupt pins

• Low power operation down to 23 μA and embedded FIFO for reducing overall system power

• Wide supply and I/O voltage range: 1.7 V to 2.75 V

• Wide operating temperature range(−40°C to +85°C)

• 10,000 g shock survival

• Small, thin Pb free, RoHS compliant3 mm × 3 mm × 0.95 mm LGA package

Description

The ADXL344 is a versatile 3-axis, digital-output, lowgMEMS accelerometer. Selectable measurement range and bandwidth and configurable, built-in motion detection make it suitable for sensing acceleration in a wide variety of applications. Robustness to 10,000gof shock and a wide temperature range (−40°C to +85°C) enable use of the accelerometer even in harsh environments.The ADXL344 measures acceleration with high resolution (13-bit) measurement at up to ±16g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface. The ADXL344 can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°.Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion. Tap sensing detects single and double taps in any direction. Free-fall sensing detects if the device is falling. Orientation detection reports four- and six-position orientation and can trigger an interrupt upon change in orientation. These functions can be mapped individually to either of two interrupt output pins.An integrated memory management system with a 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption.The ADXL344 is supplied in a small, thin, 3 mm × 3 mm × 0.95 mm, 16-terminal, plastic package.APPLICATIONSHandsetsGaming and pointing devicesPersonal navigation devicesHard disk drive (HDD) protection