ADXL345 3-Axis, ±2 g/±4 g/±8 g/±16 g Digital Accelerometer

The ADXL345 is a small, thin, low power, 3-axis accelerometer 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 ADXL345 is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 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 and if the acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. An integrated, patent pending 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor intervention.

Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.

The ADXL345 is supplied in a small, thin, 3 mm × 5 mm × 1 mm, 14-lead, plastic package.

Features and Benefits
  • Ultralow power: as low as 23 μA in measurement mode and 0.1 μA in standby mode at VS = 2.5 V (typical)
  • Power consumption scales automatically with bandwidth
  • User-selectable resolution
  • Fixed 10-bit resolution
  • Full resolution, where resolution increases with g range, up to 13-bit resolution at ±16 g (maintaining 4 mg/LSB scale factor in all g ranges)
  • See data sheet for additional features.
  • Download ADXL345-EP data sheet (pdf)
  • Extended industrial temperature range:  (−55°C to +105°C)
  • Controlled manufacturing baseline
  • One assembly/test site
  • One fabrication site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/12657 DSCC Drawing Number
    • MEMS
    Building Technology
    • Building Control and Automation
    • White Goods and Vending
    Software & Systems Requirements
    Data Sheets
    Documentnote
    ADXL345: 3-Axis, ±2 g/±4 g/±8 g/±16 g Digital Accelerometer Data Sheet (Rev. D)PDF 546 kB
    ADXL345-EP: Enhanced Product Data Sheet (Rev. B)PDF 350.59 K
    ADXL345-DSCC: Military Data Sheet
    Application Notes
    Documentnote
    AN-1057: Using an Accelerometer for Inclination Sensing (Rev. 0)PDF 168 kB
    AN-688: Phase and Frequency Response of iMEMS® Accelerometers and Gyros (Rev. 0)PDF 135 kB
    AN-1077: ADXL345 Quick Start Guide (Rev. 0)PDF 99 kB
    AN-1063: Oversampling Technique to Improve ADXL345 Output Resolution (Rev. 0)PDF 89 kB
    AN-1025: Utilization of the First In, First Out (FIFO) Buffer in Analog Devices, Inc. Digital Accelerometers (Rev. 0)PDF 138 kB
    User Guides
    Documentnote
    UG-065: Evaluation Board User Guide for ADXL345PDF 254 kB
    UG-015: iMEMS ADXL345 Inertial Sensor Evaluation SystemPDF 702 kB
    Frequently Asked Questions
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADXL345BCCZ Production14 ld LGA (5x3)OTH 490-40 to 85C3.543.04E
    ADXL345BCCZ-RL Production14 ld LGA (5x3)REEL 5000-40 to 85C00E
    ADXL345BCCZ-RL7 Production14 ld LGA (5x3)REEL 1500-40 to 85C03.04E
    ADXL345TCCZ-EP Production14 ld LGA (5x3)OTH 490-55 to 105C8.167E
    ADXL345TCCZ-EP-RL Last Time Buy14 ld LGA (5x3)REEL 5000-55 to 105C07E
    ADXL345TCCZ-EP-RL7 Production14 ld LGA (5x3)REEL 1500-55 to 105C07E
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-ADXL343Z-MMother Board249Y
    EVAL-ADXL343Z-SSatellite Board149Y
    EVAL-ADXL344Z-MMother Board249Y
    EVAL-ADXL344Z-SSatellite Board149Y
    EVAL-ADXL345ZBreakout Board30Y
    EVAL-ADXL345Z-DBUltra Low Power Development Board59Y
    EVAL-ADXL345Z-MMother Board249Y
    EVAL-ADXL345Z-SSatellite Board149Y
    EVAL-ADXL346Z-MMother Board249Y
    EVAL-ADXL346Z-SSatellite Board149Y
    EVAL-ADXRS450Z-MMother Board249Y
    EVAL-ADXRS450Z-SSatellite Board149Y
    EVAL-ADXRS453Z-MMother Board249Y
    EVAL-ADXRS453Z-SSatellite Board149Y
    EVAL-ADXRS800Z-MEvaluation Board249Y
    EVAL-ADXRS800Z-SEvaluation Board150Y
    Reference Materials
    ADXL345: 3-Axis, ±2 g/±4 g/±8 g/±16 g Digital Accelerometer Data Sheet (Rev. D) adxl345
    ADXL345：3轴，±2g/±4g/±8g/±16g数字加速度计 (Rev. D) adxl345
    ADXL345-EP: Enhanced Product Data Sheet (Rev. B) adxl345
    ADXL345 Evaluation Software adxl345
    ADXL345参考代码 adxl345
    ADXL345-DSCC: Military Data Sheet adxl345
    AN-1057: Using an Accelerometer for Inclination Sensing (Rev. 0) adxl103
    AN-688: Phase and Frequency Response of iMEMS® Accelerometers and Gyros (Rev. 0) adxrs622
    AN-1057: 利用加速度计进行倾斜检测 (Rev. 0) adxl103
    AN-1077: ADXL345 快速入门指南 (Rev. 0) adxl345
    AN-1077: ADXL345 Quick Start Guide (Rev. 0) adxl345
    AN-1063: Oversampling Technique to Improve ADXL345 Output Resolution (Rev. 0) adxl345
    AN-1025: Utilization of the First In, First Out (FIFO) Buffer in Analog Devices, Inc. Digital Accelerometers (Rev. 0) adxl345
    AN-688: iMEMS®加速度计和陀螺仪的相位与频率响应 (Rev. 0) adxrs622
    UG-065: Evaluation Board User Guide for ADXL345 adxl345
    UG-015: iMEMS ADXL345 Inertial Sensor Evaluation System adxl345
    The Five Motion Senses: MEMS Inertial Sensing to Transform Applications adxrs620
    Full-Featured Pedometer Design Realized with 3-Axis Digital Accelerometer adxl345
    CN-0133: Sensing Low-g Acceleration Using the ADXL345 Digital Accelerometer... adxl345
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