The LIS2DTW12 MEMS chip. Source: STMicroelectronicsST Microelectronics has introduced a new microelectromechanical (MEMS) sensor that combines a three-axis accelerometer and a temperature sensor on a single die.
The chip can be used in battery-sensitive detectors such as shipping trackers, wearables and internet of things (IoT) endpoints. The sensing accuracy of 0.8° C offers the comparable precision of stand-alone temperature sensors.
The accelerometer has 65 different user modes that enable developers to optimize power consumption and noise to meet application-specific requirements, according to ST Microelectronics.
The LIS2DTW12 MEMS allow for extra battery capacity for longer runtimes, enabling devices to go even further between charges, and includes a 50 nA power-down mode, as well as multiple operating modes down to less than 1 µA, a dedicated internal engine for processing accelerometer signals and a large 32-level FIFO to reduce intervention from the main controller.
The LIS2DTW12 motion engine performs free-fall and wakeup detection, single- and double-tap recognition, activity and inactivity, stationary and motion detection, portrait and landscape detection, and 6D and 4D orientation. The chip is specified from -30° C to 85° C.
