Industrial and Sensor ICs
Volume 9, Issue 4 YOUR SEMICONDUCTOR SOLUTIONS RESOURCE

Ultralow Power, ±2 g/±4 g/±8 g/±16 g Motion Sensor Enhances User Experience and Extends Battery Life in Portable Instrumentation

Motion sensing functionality in portable industrial instrumentation devices offers multiple benefits including an enhanced user experience and extended battery life. The ultralow power ADXL345, 3-axis iMEMS digital accelerometer offers 4 mg resolution and built-in motion detection functionality including single/double tap sensing, activity/inactivity sensing that detects presence or lack of motion and whether the acceleration on any axis exceeds a user-set level, and free-fall sensing. These functions can be mapped to interrupt output pins. The ADXL345 accelerometer consumes only 130 µA in full activity across a wide bandwidth of 160 Hz and features a 32 level output data FIFO to minimize host processor load and save even more overall system power consumption to preserve battery life. It is available in a 3 mm × 5 mm × 1 mm, 14-lead LGA package.

Part
Number
# of
Axes
Range
(g)
Sen-
sitivity
Output
Type
Typ BW
(kHz)
Voltage
Supply
(V)
Supply
Current
Max
(µA)
Temp Range
(°C)
Package Price
($U.S.)
ADXL335 3 ±3 300 mV/g Analog 1.6 1.8 to 3.6 350 –40 to +85 LFCSP* 2.38
ADXL345 3 ±2/±4/
±8/±16
Up to
256 LSB/g
Digital 1.6 2.0 to 3.6 130 –40 to +85 LGA 3.04


"Detecting Five Distinct Motions with MEMS Inertial Sensors."
The need to detect and process motion, tilt, rotation, vibration, and shock has permeated many industries and markets. To learn how to detect these five distinct motions with MEMS inertial sensors, please visit http://www.analog.com/en/content/WC_DETECTING_FIVE_DISTINCT_MOTIONS_MEMS_INERT/webcast.html.

Previous

Back to top