Würth Elektronik WSEN-ISDS motion sensor

Würth Elektronik has expanded its range of compact MEMS-based sensors with a 3-axis accelerometer and integrated gyroscope. The motion sensor is also versatile, due to its selectable measuring ranges and data rates. To facilitate integration, the sensor outputs pre-calibrated, processed data for application-specific functionalities of free-fall, wake-up, tap, activity, motion, tilt and orientation detection. The 2.5 x 3.0 x 0.86 mm sensor in an LGA package provides digital I²C and SPI interfaces as well as a FIFO buffer for storing output data.

The compact accelerometer and gyroscope has a range of applications, from localisation and navigation solutions, to automation, industrial devices and machines, antenna and platform stabilisation, through to industrial IoT devices, robots and drones. Linear and angular acceleration measurement extends from single-event registration to high frequency continuous vibration monitoring. Data rates can be selected up to 1400 Hz for the accelerometer and up to 937 Hz for the gyroscope. The output data rate extends to 6.66 kHz. The module draws 0.69 mA in high-power mode, but this goes down to 0.28 mA in low-power mode to capture single pulses.

The user can select different measuring ranges depending on the level of acceleration the motion sensor is to detect. Here, Würth Elektronik offers the ranges ±2 g, ±4 g, ±8 g, ±16 g for linear acceleration and ±250 dps, ±500 dps, ±1000 dps, ±2000 dps for the change of angular velocity. The sensitivity accuracy is ±3%.