品牌:Analog Devices 型号:惯性传感器 ADXL346 ADXL346ACCZ ADXL346ACCA-RL 种类:加速度 材料:金属 材料物理性质:半导体 材料晶体结构:多晶 制作工艺:薄膜 输出信号:数字型 防护等级:5 线性度:0.1（%F.S.） 迟滞:0.1（%F.S.） 重复性:100（%F.S.） 灵敏度:0.1 漂移:0.5 分辨率:100

The ADXL346 is a small, thin, ultralow power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g. Digital output data is formatted as 16-bit twos complement and is accessible through either an SPI (3- or 4-wire) or I²C® digital interface.

The ADXL346 is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes of less than 1.0°.

Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion by comparing the acceleration on any axis with user-set thresholds. Tap sensing detects single and double taps in any direction. Free-fall sensing detects if the device is falling. Orientation detection is capable of concurrent four- and six-position sensing and a user-selectable interrupt on orientation change for 2D or 3D applications. These functions can be mapped individually to either of two interrupt output pins. An integrated, patent pending memory management system with 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption.

Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.

The ADXL346 is supplied in a small, thin, 3 mm × 3 mm × 0.95 mm, 16-lead, plastic package.

Applications

• Handsets
• Medical instrumentation
• Gaming and pointing devices
• Industrial instrumentation
• Personal navigation devices
• Hard disk drive (HDD) protection

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