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ADI ADXL362微功耗三轴MEMS加速度计解决方案

关键词:工业控制 MEMS 加速度计

时间:2012-06-21 09:59:04       作者:ADI       来源:ADXL362

ADI公司的ADXL362是微功耗三轴MEMS加速度计,数字输出,加速度范围为±2/±4/±8 g, 工作电压1.8V-3.3V,电源电压2V和100Hz输出数据速率时的功耗为2μA,运动触发叫醒模式的功耗为300nA,器件提供12位输出分辨率,8位格式的数据,在±2 g范围的分辨率为1 mg/LSB,主要用在助听器,家庭保健设备,运动使能电源开关,无线传感器和运动使能计量设备.本文介绍了ADXL362主要特性, ADXL362功能方框图以及评估板EVAL-ADXL362Z主要特性和电路图.

ADXL362: Micropower 3-Axis MEMS Accelerometer: Digital Output, ±2/±4/±8 g Range

The ADXL362 is an ultra-low power 3-axis MEMS accelerometer that consumes less than 2 μA at a 100 Hz output data rate, and 300 nA in motion-triggered Wake-Up Mode.

Unlike accelerometers that use power duty cycling to achieve low power consumption, the ADXL362 does not alias input signals by undersampling; it samples the sensor’s full bandwidth at all data rates.

The ADXL362 always provides 12-bit output resolution; 8-bit formatted data is also provided for more efficient single-byte transfers when a lower resolution is sufficient. Measurement ranges of ±2 g, ±4 g, and ±8 g are available, with a resolution of 1 mg/LSB on the ±2 g range. For applications where a noise level lower than the ADXL362’s normal 550 μg/7Hz is desired, either of two lower noise modes (down to 175 μg/7Hz typ) may be selected at minimal increase in su..

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