Low-power iMEMS gyros offer high performance benefits under harsh vibration
The ADXRS642, ADXRS646, and ADXRS649 incorporate ADI’s advanced, differential quad-sensor technology, which rejects the influence of linear acceleration and vibration to enable these new MEMS gyros to offer accurate and reliable rate sensing even where severe shock and vibration are present.
The new MEMS gyros have linear acceleration sensitivities as low as 0.015°/sec/g which compares to 0.1°/sec/g which is currently offered by the leading alternative MEMS gyros.
The power efficient ADXRS64x series claims 10 times lower power consumption at 3.5 mA compared to other MEMS gyros that consume as much as 60 mA and also benefits from much faster start- up times, as fast as 3 ms.
For applications where ultra-wide measurement ranges are needed, the ADXRS649 also offers the highest rate of rotation sensing available with ±20,000°/sec and fast 3 ms start-up time for quick power cycling. The measurement range is extendable to ±50,000°/sec with the addition of an external resistor.
The ADXRS646 gyro offers a measurement range of ±250°/s, 1 kHz bandwidth, and 8°/hr 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 ADXRS646 is ideally suited for high-performance heading measurement and platform stabilization.
The ADXRS642 is also rated at ±250°/s and brings improved vibration and shock immunity performance to existing ADI iMEMS gyroscope users in a convenient drop-in upgrade. All of the new iMEMS gyroscopes apply ADI’s industry-leading iMEMS monolithic gyroscope technology and patented high-volume BiMOS process with years of proven field reliability.
Availability and Pricing
Samples and EVAL boards of the ADXRS642 gyroscopes are available now. Full production will begin April 2011. The device is packaged in a 7 mm × 7 mm × 3 mm BGA chip-scale package. Pricing each per 1,000 is $41.85.
Samples and EVAL boards of the ADXRS646 gyroscopes are available now. Full production will begin July 2011. The device is packaged in a 7 mm × 7 mm × 3 mm BGA chip-scale package. Pricing each per 1,000 is $75.39.
Samples and EVAL boards of the ADXRS649 gyroscopes are available now. The devices are in full production. The device is packaged in a 7 mm × 7 mm × 3 mm BGA chip-scale package. Pricing each per 1,000 is $58.59.
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