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Introduction
We started the study of sensor technology with Accelerometer closely packed in case from Murata. The first challenge was to open that without breaking the internal electronic part/circuit. After different type of force experiment on box, the small PCB come out. After close look, Accelerometer and relevant components. Then start searching for more sencor related to Accelerometer and find XTrinsic FXLN83xxQ from Freescale.
Typical applications
XTrinsic FXLN83xxQ accelerometers are used for
Applications in industrial
Medical
Tamper detection
White goods: tilt, vibration, and shake detection
Motion sensing in robotics applications
Inclinometer, vibrometer
Activity monitoring in sports and medical device
Physical principles
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Xtrinsic FXLN83xxQ 3-Axis Low- Power Analog-Output Accelerometer FXLN83xxQ is a family of 3-axis, low-power, low- g , analog- output accelerometers that consist of an acceleration sensor along with a CMOS signal conditioning and control ASIC in a 3x3x1mm QFN package. The analog outputs for the X, Y, and Z axes are internally compensated for zero- g offset and sensitivity, and then buffered to the output pads. The outputs have a fixed zero- g offset of 0.75V, irrespective of the V DD supply voltage. The bandwidth of the output signal for each axis may be independently adjusted using external capacitors. The host can place the FXLN83xxQ into a low-current shutdown mode to conserve power.
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