ADXL343是AD公司的一款MEMS加速度计产品，ADXL343是3轴、±2 G/±4 G/±8 G/±16 G数字加速度计，本站介绍了ADXL343的封装应用图解、特点和优点、功能等，并给出了与ADXL343相关的AD元器件型号供参考。
ADXL343 - 3轴、±2 G/±4 G/±8 G/±16 G数字加速度计 - MEMS加速度计 - MEMS - Analog Devices, LLC
ADXL343是一款多功能3轴、数字输出、低g MEMS加速度计。可选择测量范围和带宽以及可配置的内置运动检测使得该器件适合多种应用的加速度感应。该器件具有高达10000g的抗冲击能力，宽工作温度范围（?40°C至+85°C），使用户能在非常苛刻的环境下使用加速度计。
ADXL343采用高分辨率（13位）测量加速度，测量范围达±16 g。数字输出数据为16位二进制补码格式，可通过SPI（3线或4线）或I2C数字接口访问。ADXL343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)，能够测量不到1.0°的倾斜角度变化。
该器件提供多种特殊检测功能。活动和非活动检测功能检测有无运动发生。敲击检测功能可以检测任意方向的单击和双击动作。自由落体检测功能可以检测器件是否正在掉落。这些功能可以独立映射到两个中断输出引脚中的一个。
集成式存储器管理系统采用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低，并降低整体系统功耗。
ADXL343采用3 mm × 5 mm × 1 mm、14引脚小型超薄塑料封装。
应用
EVAL-ADXL343Z是一款简单的分线板，可方便地将ADXL343 与现有系统相连。ADXL343是一款数字输出、3轴加速度计，具有低功耗和内置功能，是多种应用的理想选择。由于尺寸较小，EVAL-ADXL343Z对系统和加速度计的性能几乎没有影响，因此适用于在现有系统中评估ADXL343。注意，必须通过SPI或I2C以数字方式与ADXL343通信。EVAL-ADXL343Z不含有处理器，用户必须提供外部固件。关于包含处理器的评估板，请参考 EVAL-ADXL343Z-M 和 ADXL343Z-DB。
The ADXL343 Development Board is an easy-to-use tool designed to shorten application development time by providing a ready-to-use platform for data collection and firmware development.
The board is pre-configured as a datalogger that can be used to gather data for refining algorithms, tuning thresholds, and generally familiarizing oneself with accelerometer data. Powered by two AAA batteries, the board is completely untethered and integrates seamlessly into portable applications. Logged data is stored on a MicroSD memory card, providing essentially unlimited memory capacity and operating system versatility. Data is stored in a text (.txt) file, so no software installation is required to operate the board or read data. A 2GB MicroSD card and a USB MicroSD card reader are provided with the board.
Additionally, the board is fully programmable, providing a hardware platform on which firmware can be tested in parallel with development of application hardware. Communications and processing are performed by an ARM7-based ADuC7024 micro-controller, and firmware is written in C. A programming cable is provided with the board, and a development environment and header files are supplied on this page.Finally, the platform can be duplicated in the final application, having already been tested with the application firmware. Schematics and layout can be found under the Supporting Documentation tab and can be used freely in your application.
Note that this board is not configured to display real-time data. For real-time evaluation of the ADXL343, please refer to the Inertial Sensor Evaluation Board. For a simple ADXL343 Breakout Board, refer to the EVAL-ADXL343Z.
