MMA845X三轴14位数字加速度计应用电路

MMA8451Q是14位/8位智能低功耗三轴数字加速度计,工作电压1.95V-3.6V,接口电压1.6V-3.6V,动态可选择满刻度为±2g/±4g/±8g,输出数据速率(ODR)从1.56 Hz 到800 Hz, 噪音为99 ug/√Hz,14位和8位数字输出,I2C数字输出接口,主要用在电子罗盘,静态方向检测,笔记电脑,电子阅读器,实时方向检测(如3D定位反馈)和实时行为分析(如计步器).

MMA8451Q典型应用:

• E-Compass applications

• Static orientation detection (Portrait/Landscape, Up/Down, Left/Right, Back/Front position identification)

• Notebook, E-Reader and Laptop Tumble and Freefall Detection

• Real-time orientation detection (virtual reality and gaming 3D user position feedback)

• Real-time activity analysis (pedometer step counting, freefall drop detection for HDD, dead-reckoning GPS backup)

• Motion detection for portable product power saving (Auto-SLEEP and Auto-WAKE for cell phone, PDA, GPS, gaming)

• Shock and vibration monitoring (mechatronic compensation, shipping and warranty usage logging)

• User interface (menu scrolling by orientation change, tap detection for button replacement)