Analog Devices ADXL346: MEMS motion sensor measures tilt, shock, and acceleration

Measuring tilt, shock, and acceleration, the ultralow-power, high-resolution ADXL346 iMEMS accelerometer operates at a 1.8V primary supply voltage. The digital three-axis smart-motion sensor provides selectable measurement ranges and measures dynamic acceleration from motion or shock and static acceleration, allowing use as a tilt sensor. The device includes an on-chip FIFO memory block storing as much as 32 samples of X-, Y-, and Z-axis data and off-loads the FIFO function from the host processor. This process allows the host processor and other peripherals to enter sleep mode when not in use. Features include a 0.1- to 1600-Hz selectable bandwidth and 150-µA power-consumption ranges at 1600-Hz bandwidth as low as 25 µA at less than 10 Hz. The accelerometer measures dynamic acceleration with user-selectable measurement ranges of ±2, 4, 8, and 16g and uses built-in orientation sensing using simple register reads. Available in a 3×3×0.95-mm, 16-lead LGA package, the ADXL346 costs $3.04 (1000).

Analog Devices, www.analog.com