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

ADXL345 功能框图The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is acces-sible 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 appli-cations, 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.

技术特性
  • Ultralow power: as low as 40 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)
  • Embedded, patent pending FIFO technology minimizes host processor load
  • Tap/double tap detection
  • Activity/inactivity monitoring
  • Free-fall detection
  • Supply voltage range: 2.0 V to 3.6 V
  • I/O voltage range: 1.7 V to VS
  • See data sheet for additional features
技术指标
  • # of Axes: 3
  • Range: +/- 2/4/8/16g
  • Sensitivity: up to 256 LSB/g
  • Sensitivity Accuracy (%): �10n/a
  • Output Type: Digital
  • Typical Bandwidth (kHz): 1.6kHz
  • Supply Current : 145µA
开发板实物图

ADXL345 功能框图

订购指南
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS
ADXL345BCCZ 产品状态: 量产 LGA/CASON/CH ARRY SO NO LD 14 工业 Tray, 490 $ 3.54 $ 3.04 E  材料信息
ADXL345BCCZ-RL 产品状态: 量产 LGA/CASON/CH ARRY SO NO LD 14 工业 Reel, 5000 $ 3.54 $ 3.04 E  材料信息
ADXL345BCCZ-RL7 产品状态: 量产 LGA/CASON/CH ARRY SO NO LD 14 工业 Reel, 1500 $ 3.54 $ 3.04 E  材料信息
ADXL345TCCZ-EP 产品状态: 量产 LGA/CASON/CH ARRY SO NO LD 14 工业 Tray, 490 $ 8.16 $ 7.00 E  材料信息
ADXL345TCCZ-EP-RL 产品状态: 量产 LGA/CASON/CH ARRY SO NO LD 14 工业 Reel, 5000 - $ 7.00 E  材料信息
ADXL345TCCZ-EP-RL7 产品状态: 量产 LGA/CASON/CH ARRY SO NO LD 14 工业 Reel, 1500 - $ 7.00 E  材料信息
ADXL345DB Evaluation Board
产品型号 描述 报价 RoHS
EVAL-ADXL345Z-DB 产品状态: 量产 Evaluation Board $ 59.00
ADXL345Z Breakout Board
产品型号 描述 报价 RoHS
EVAL-ADXL345Z 产品状态: 量产 Evaluation Board $ 30.00
Real Time Eval System for Digital Output Sensor
产品型号 描述 报价 RoHS
EVAL-ADXL312Z-M 产品状态: 量产 Evaluation Board $ 249.00
EVAL-ADXL312Z-S 产品状态: 量产 Evaluation Board $ 149.00
EVAL-ADXL345Z-M 产品状态: 量产 Evaluation Board $ 249.00
EVAL-ADXL345Z-S 产品状态: 量产 Evaluation Board $ 149.00
EVAL-ADXL346Z-M 产品状态: 量产 Evaluation Board $ 249.00
EVAL-ADXL346Z-S 产品状态: 量产 Evaluation Board $ 149.00
EVAL-ADXRS450Z-M 产品状态: 量产 Evaluation Board $ 249.00
EVAL-ADXRS450Z-S 产品状态: 量产 Evaluation Board $ 149.00
EVAL-ADXRS453Z-M 产品状态: 量产 Evaluation Board $ 249.00
EVAL-ADXRS453Z-S 产品状态: 量产 Evaluation Board $ 149.00
EVAL-ADXRS800Z-M 产品状态: 量产 Evaluation Board $ 249.00
EVAL-ADXRS800Z-S 产品状态: 量产 Evaluation Board -
ADXL345 应用技术支持与电子电路设计开发资源下载
  1. ADXL345 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf