3-axis accelerometer performs wake-up in consumer designs
The company presents the device as a high performance and reliable accelerometer in a package that is sized and priced to be embedded in anything and everything, from toys, wearables, remote controls to the SmartHome and IoT. The KXTJ3 is a drop-in replacement for the company’s KXTJ2, and offers improvements in a number of aspects, from better noise performance to extended range, to improve interrupt functionality.
When applied in power savings, allowing a system to sleep when there is no motion and then triggering the system to wakeup when motion occurs, the KXTJ3 has a high resolution embedded motion wake-up engine offering thresholds as low as 3.9 mg. It can also operate as low as 1.5 µA at its lowest ODR of 0.781 Hz.
Other use cases for accelerometers include detecting device orientation relative to gravity, enabling a more natural user-experience and interactivity, and fostering automation by providing awareness and context of a device or its use. The KXTJ3 offers g-ranges of 2g, 4g, 8g, or 16g and resolution modes up to 14g. It supports the I²C protocol up to 3.4 MHz and has a built-in voltage regulator offering stable operation from 1.71 to 3.6V.
Kionix/Rohm Semiconductor; www.rohm.com/eu
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