Motion sensing module

3 March 2010 Analogue, Mixed Signal, LSI

STMicroelectronics has integrated a 3-axis digital accelerometer with a 2-axis analog gyroscope in a single module. The solution combines a user-selectable full-scale acceleration range of ±2 G/±4 G/±8 G with a wide angular-rate detection from 30 to 6000 dps along the pitch and yaw axes. The gyroscope element provides two separate outputs for each axis at the same time: an unamplified output value for high accuracy of slow motion and a 4x amplification to detect and measure very fast gestures and movements. The MEMS module includes power-down and sleep modes and it can operate with any supply voltage in the range of 2,7 to 3,6 V. The device comes with built-in self-test capability that allows the customer to verify the functioning of both sensors after the assembly, without the need to move the board during testing.

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