Part # ADXL346 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: ADXL346 Three-Axis ±2 g/±4 g/±8 g/±16g Digital Accelerometer Preliminary Data Sheet (Rev. PrB)

Part Details:

Three-Axis, ±2 g/±4 g/±8 g/±16g Digital Accelerometer Preliminary Technical Data ADXL346 FEATURES GENERAL DESCRIPTION Ultralow power: 25 µA to 145 µA at VS = 1.8 V (typ) The ADXL346 is a small, thin, low power, three-axis accelerometer Power consumption scales automatically with bandwidth with high resolution (13-bit) measurement at up to ±16 g. Digital User-selectable resolution output data is formatted as 16-bit twos complement and is acces- Fixed 10-bit resolution sible through either a SPI (3- or 4-wire) or I2C digital interface. Full resolution, where resolution increases with g range, The ADXL346 is well suited for mobile device applications. It up to 13-bit resolution at ±16 g (maintaining 4 mg/LSB measures the static acceleration of gravity in tilt-sensing appli- scale factor in all g ranges) cations, as well as dynamic acceleration resulting from motion 32 levels of output data FIFO minimizes host processor load or shock. Its high resolution (4 mg/LSB) enables measurement Tap/double tap detection of inclination changes as little as 0.25°. Activity/inactivity monitoring Free-fall detection Several special sensing functions are provided. Activity and 4- and 6-position orientation sensing inactivity sensing detect the presence or lack of motion and if Supply and I/O voltage range: 1.7 V to 2.75 V the acceleration on any axis exceeds a user-set level. Tap sensing SPI (3 and 4 wire) and I2C digital interfaces detects single and double taps. Free-fall sensing detects if the Flexible interrupt modes--any interrupt mappable to either device is falling. These functions can be mapped to one of two interrupt pin interrupt output pins. An integrated 32-level first in, first out Measurement ranges selectable via serial command (FIFO) buffer can be used to store data to minimize host Bandwidth selectable via serial command processor intervention. Both 4- and 6-position orientation Wide temperature range (-40°C to +85°C) sensing are available for 2- and 3-D applications. 10,000 g shock survival Low power modes enable intelligent motion-based power Pb free/RoHS compliant management with threshold sensing and active acceleration Small and thin: 3 mm × 3 mm × 1 mm LGA package measurement at extremely low power dissipation. APPLICATIONS The ADXL346 is supplied in a small, thin, 3 mm × 3 mm × Handsets 1 mm, 16-lead, plastic package. Gaming and pointing devices

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ADXL346.pdf Datasheet