Accelerometer senses up to 24 G

25 November 2009 Analogue, Mixed Signal, LSI

STMicroelectronics has introduced a three-axis sensor with digital output that can detect accelerations up to 24 G. The LIS331HH’s combination of multiple full-scale ranges above 10 G with small-size, high-resolution, low-power consumption and smart embedded features enables high-precision motion sensing in a wide range of consumer and industrial applications.

ST’s newest MEMS accelerometer provides accurate output across full-scale ranges of ±6/±12/±24 G. The medium-G sensing enables high-level vibration monitoring and high-shock detection without any loss of information. Two separate, programmable interrupt signals enable immediate notification of desired events, such as when the acceleration value goes above or below a user-defined threshold.

The LIS331HH can be programmed to work in the sleep-to-wake-up mode. In this mode, the accelerometer keeps the read chain active, consuming less than 10 μA, and wakes up when an event occurs, automatically increasing the output data rate. The accelerometer boasts high stability over a wide temperature range for both zero-G offset and sensitivity. Its compact and robust design provides very high shock survivability up to 10 000 G. Built-in self-test capability allows the customer to verify the functioning of the sensor after it has been assembled, without the need to do any movement with the board.

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