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ADXL345BCCZ-RL

File Size1005KB,40 Pages
ManufacturerADI
Websitehttps://www.analog.com
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3½,± 2
g/
± 4
g/
± 8
g/
± 16
g
数字加速度计
ADXL345
特性
超½功耗:V
S
= 2.5 V时(典型值),测量模式下½至23
µA,待
机模式下为0.1
µA
功耗随带½自动按比例变化
用户可选的分辨率
10½固定分辨率
全分辨率,分辨率随g范围提高而提高,±16
g时高达13½
(在所有g范围内保持4
mg/LSB的比例系数)
正在申请专利的嵌入式存储器管理系统采用FIFO技术,可将
主机处理器负荷降至最½
单振/双振检测
活动/非活动监控
自由½½检测
电源电压范围:2.0
V至3.6 V
I/O电压范围:1.7 V至V
S
SPI(3线和4线)和I
2
C数字接口
灵活的中断模式,可映射到任一中断引脚
通过串行½令可选测量范围
通过串行½令可选带½
½温度范围(−40°C至+85℃)
抗冲击½力:10,000
g
无铅/符合RoHS标准
小而薄:3
mm× 5 mm× 1 mm,LGA封装
概述
ADXL345是一款小而薄的超½功耗3½加速度计,分辨率
高(13½),测量范围达±16
g。数字输出数据为16½二进制补
码格式,可通过SPI(3线或4线)或I
2
C数字接口访问。
ADXL345非常适合移动设备应用。它可以在倾斜检测应用
中测量静态重力加速度,还可以测量运动或冲击导致的动
态加速度。其高分辨率(3.9
mg/LSB),½够测量不到1.0°的倾
斜角度变化。
该器件提供多种特殊检测功½。活动和非活动检测功½通
过比较任意½上的加速度与用户设½的阈值来检测有无运
动发生。敲击检测功½可以检测任意方向的单振和双振动
½。自由½½检测功½可以检测器件是否正在掉½。这些
功½可以独立映射到两个中断输出引脚中的一个。正在申
请专利的集成式存储器管理系统采用一个32级先进先出
(FIFO)缓冲器,可用于存储数据,从而将主机处理器负荷
降至最½,并降½整½系统功耗。
½功耗模式支持基于运动的智½电源管理,从而以极½的
功耗进行阈值感测和运动加速度测量。
ADXL345采用3 mm × 5 mm × 1 mm,14引脚小型超薄塑料
封装。
应用
手机
医疗仪器
游戏和定点设备
工业仪器仪表
个人导航设备
硬盘驱动器(HDD)保护
功½框图
V
S
V
DD I/O
ADXL345
POWER
MANAGEMENT
SENSE
ELECTRONICS
3-AXIS
SENSOR
ADC
DIGITAL
FILTER
CONTROL
AND
INTERRUPT
LOGIC
INT1
INT2
32 LEVEL
FIFO
SDA/SDI/SDIO
SERIAL I/O
SDO/ALT
ADDRESS
07925-001
SCL/SCLK
GND
CS
图1.
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Speci cations subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2009–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
ADI中文版数据手册是英文版数据手册的译文,敬请谅解翻译中可½存在的语言组织或翻译错误,ADI不对翻译中存在的差异或由此产生的错误负责。如需确认任½词语的准确性,请参考ADI提供
的最新英文版数据手册。
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