Analog Devices introduces integrated MEMS gyroscope
-- Test & Measurement World, 10/1/2002 2:00:00 AM
Analog Devices (Norwood, MA; www.analog,com ) has introduced its iMEMS ADXRS gyroscope--the first commercially available device to integrate both an angular-rate sensor and signal-processing electronics onto a single piece of silicon. The device integrates the sensor structure and all necessary signal-conditioning circuitry inside a 7x7x3-mm ball-grid-array (BGA) package that consumes only 5 mA at 5 V.
The new device incorporates a full mechanical and electronic self-test feature that can operate while the sensor is active. The company fabricates the device using its iMEMS (integrated Micro Electro Mechanical System) surface-micromachining process, which the firm has employed to manufacture more than 100 million accelerometers since 1993.
Gyroscopes measure the rate at which objects rotate. The information provided by gyros can trigger automobile airbag deployment during rollover, improve the accuracy and reliability of GPS/navigation systems, and stabilize moving platforms such as automobiles, airplanes, robots, antennas, and industrial equipment. The ADXRS gyro delivers a stable output in the presence of mechanical noise up to 2000 g over a wide frequency range. The ADXRS gyro is offered in two versions: The ADXRS300 provides dynamic range of 300°/s, and the ADXRS150 provides dynamic range of 150°/s. Both cost $30 per unit in 1,000-piece quantities. Samples are currently available, and both products will be in full production by the end of 2002.
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