Freescale的3轴多功能数字加速度计解决方案

Keywords： 3-Axis,Digital Accelerometer, MMA8491Q 

摘要：本演示板提供检测传感器演示使用的Xtrinsic MMA8491Q45°倾斜传感器和3轴加速度计，并且使用了一个透明的塑料外壳。

基本特性：

The MMA8491Q is a low voltage, 3-axis low-g accelerometer housed in a 3 mm x 3 mm QFN package. The device can accommodate two accelerometer configurations, acting as either a 45° tilt sensor or a digital output accelerometer with I2C bus.

• As a 45° Tilt Sensor, the MMA8491Q device offers extreme ease of implementation by using a single line output per axis.

• As a digital output accelerometer, the 14-bit ±8g accelerometer data can be read from the device with a 1 mg/LSB sensitivity. The extreme low power capabilities of the MMA8491Q will reduce the low data rate current consumption to less than 400 nA per Hz.

Features

• Extreme low power, 400 nA per Hz
• Ultra-fast data output time, ~700 s
• 1.95V to 3.6V VDD supply range
• 3 mm x 3 mm, 0.65 mm pitch with visual solder joint inspection
• ±8g full-scale range
• 14-bit digital output, 1 mg/LSB sensitivity
• Output Data Rate (ODR), implementation based from < 1 Hz to 800 Hz..

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