Freescale aims accelerometer at preventive maintenance

Accelerometers intended for phones will not always hit the spot in industrial sensing, claimed Freescale at the launch of a family of them aimed at industrial preventive maintenance.

Called FXLN83xxQ, the family is “designed to capture acceleration information often missed by less accurate sensors commonly deployed in consumer products such as smartphones and exercise activity monitors, the new device enables intelligent algorithms to better perform fault prognostication for predictive maintenance and condition monitoring applications,” said Freescale.

The 3x3mm three-axis device has up to 2.7kHz bandwidth.

Outputs are analogue, and intended for connection to a microcontroller with an ADC.

Each chip has two switchable sensitivities, which can be changed on the fly.

Across the family, +/-2, +/-4, +/-8, +/-16g are available, with gains of, 229.0, 114.5, 57.25, 28.62mV/g respectively.

• FXLN83x1Q +/-2 or +/-8g range


• FXLN83x2Q +/-4 or +/-16g


• FXLN836xQ 1.1kHz X and Y axis bandwdth (Z=600Hz)


• FXLN837xQ 2.7kHz X and Y axis bandwdth (Z=600Hz)

0g is indicated by 0.75V out from any channel.

Operating range is 1.71 to 3.6V (at 180uA typ, 30nA shutdown) and -40 to 105C.

Product availability is guaranteed for 10 years.

Unusually for a chip, absolute maximum ratings include a drop height, which is 1.8m.

An evaluation board called DEMOFXLN83xxQ is available.

For trying out the chips in existing applications, four hand-solderable break-out boards (which include passives) are available – BRKOUT-FXLN8361Q, 62Q, 71Q and 72Q.

Xtrinsic Intelligent Sensing Framework is available for software development.

steve bush

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via Yuichun