Date: 07/10/2010

New gyroscope from ADI is immune to vibrations

Analog Devices, Inc. has released the ADXRS453 iMEMS gyroscope featuring differential Quad-Sensor design to operate in harsh weather conditions. The ADXRS453 is vibration-immune MEMS gyro with sensitivity to linear acceleration specified at only 0.01 °/sec/g, vibration rectification of only 0.0002 °/sec/g2, a noise-rate density specification of 0.023°/sec/?Hz at +105°C, null offset stability of 16°/hr and power consumption of only 6 milliamps under typical conditions. The new gyro is available in a cavity plastic SOIC-16 and an SMT-compatible vertical mount package and operate with wide voltage range of 3.3 V to 5 V. This sensor works in extended temperature range of -40°C to 125°C. The ADXRS453 is designed for for industrial and defense applications.

"The ADXRS453 features an innovative Quad-Sensor design that rejects the influence of linear acceleration caused by intense shock and vibration," said Kelly Atkinson, defense electronics marketing manager, Analog Devices. "This enables the ADXRS453 to enable complex navigation and GPS-aided dead-reckoning in exceedingly harsh environments like unmanned aerial vehicles (UAVs), platform stabilization in land- and sea-based military vehicles, and avionics equipment where shock and vibration are present and can cause measurement errors in less capable gyros."

The digital output ADXRS453 can sense is capable of sensing angular rates up to ±300°/sec and its angular rate data is presented as a 16-bit word within a 32-bit serial peripheral interface (SPI) message. The ADXRS453 utilizes an internal, continuous self-test architecture. The integrity of the electromechanical system is checked by applying a high frequency electrostatic force to the sense structure to generate a rate signal that can be differentiated from the baseband rate data and internally analyzed.

"No other MEMS gyroscope is able to perform at this level under these conditions," said Wayne Meyer, inertial MEMS sensor marketing and applications manager, Analog Devices. "With robust performance and operation up to +125°C temperature, this MEMS gyroscope provides industry leading stability and vibration immunity for all kinds of demanding applications."

Package: small 16-lead plastic SOIC, SMT-compatible ceramic vertical-mount

Price:
ADXRS453 16-lead plastic SOIC : Each US$48.24 for 1K pieces
ADXRS453 SMT-compatible ceramic vertical-mount: Each US$62.29 for 1K pieces.

Availabilty: Sampling today scheduled for production release in December 2010.