Analog Devices? MEMS digital gyroscope offers higher rate sensing accuracy where extreme shock and vibration are present
Analog Devices, Inc. (ADI) today introduced the ADXRS453 iMEMS® gyroscope, the latest addition to ADI’s portfolio of fourth-generation high-performance, low-power gyroscopes with digital output. Specifically designed for angular rate (rotational) sensing in harsh environments, the new gyro features an advanced, differential Quad-Sensor™ design that enables it to operate accurately under intense shock and vibration conditions. The ADXRS453 is the most stable, vibration-immune MEMS gyro available, 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 is capable of operating across a wide voltage range of 3.3 V to 5 V and an extended temperature range of -40°C to 125°C. The ADXRS453 is well suited 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.”
More about the ADXRS453 iMEMS Gyroscope
The digital output ADXRS453 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.”
Key Features and Benefits
* -40° C to +125° C operation is suitable for harsh defense environments
* Ultra-high vibration rejection of 0.01°/s/g provides very accurate angular rate measurements
* Excellent 16°/hr null offset stability virtually eliminates drift for greater accuracy
* 2,000-g powered shock survivability delivers greater reliability
* Low power consumption addresses lower power budget demands
The high-performance ADXRS453 and ADXRS450 iMEMS gyroscopes are available today in sample quantities with production release scheduled for December 2010. The ADXRS453 comes in a small 16-lead plastic SOIC package and an SMT-compatible ceramic vertical-mount package; each is priced at $48.24 per unit and $62.29 per unit, respectively, in 1,000-unit quantities.
About Analog Devices
Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.
iMEMS is a registered trademark and Quad-Sensor is a trademark of Analog Devices, Inc.
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