Analog Devices has introduced three low-power iMEMS gyroscopes with analogue output for angular rate sensing in adverse environments. The ADXRS642, ADXRS646, and ADXRS649 gyroscopes incorporate the company's differential quad-sensor technology, which eradicates the influence of linear acceleration and vibration, and enables the gyroscopes to offer rate sensing even during severe shock and vibration. For applications requiring ultra-wide measurement ranges, the ADXRS649 gyroscope offers high rotation sensing with ±20,000°/s and 3ms start-up time for swift power cycling. This measurement range can be extended to ±50,000°/s by adding an external resistor. The ADXRS646 gyroscope offers a measurement range of ±250°/s, 1kHz bandwidth, and 8°/h drift with low broadband noise. Coupled with its low-g sensitivity of 0.015°/s/g and vibration rectification of 0.0001°/s/g², the gyroscope is suitable for heading measurement and platform stabilisation. The ADXRS642 gyroscope is also rated at ±250°/s and offers good vibration and shock immunity performance. The gyroscopes leverage the company's iMEMS monolithic gyroscope technology and high-volume BiMOS process. They operate from -40 to +105° C, making them suitable for industrial environments.
