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Sensors/MEMS??

Gyroscopes enable simple user interface, control

Posted: 15 Jun 2010 ?? ?Print Version ?Bookmark and Share

Keywords:MEMS? sensor? gyroscope? interface?

ADIS16135/ADIS16385 gyro

Analog Devices Inc. is adding two highly integrated and precise MEMS inertial sensors to its product line of iSensor motion sensor products designed to help industrial equipment manufacturers more easily implement stabilization, navigation and control features. The new sensors combine tactical grade (gyroscope performance with ADI's iSensor integration and factory calibration.

The ADIS16135 iSensor precision angular rate gyro and the ADIS16385 iSensor six-degrees-of-freedom inertial measurement unit (IMU) are both based on ADI's iMEMS inertial sensor technology cores and offer an unmatched 6 degrees per hour bias stability, and angular random walk of 0.75/hr. Extensive factory calibration results in an unmatched sensitivity of 16ppm/C and bias stability to within 0.003/s over -40C to 85C. The sensors are dynamically compensated and provide a simple user interface and control via a standard SPI and register interface. The ADIS16135 gyro and ADIS16385 IMU are designed for a broad range of industrial and instrumentation applications including: camera stability; antenna alignment; down-hole drilling; and GPS navigation in ships, aircraft, fleet vehicles, agricultural machinery and factory robotics.

"With tactical grade gyro performance available in ADI's newest iSensor motion sensor products, complex stabilization and GPS-aided dead-reckoning is more easily enabled," said Bob Scannell, iSensor business development manager, ADI. "For industrial system designers who require the highest levels of gyroscope bias accuracy in extreme environments, the ADIS16135 gyro and ADIS16385 multiaxis IMU achieve the best cost-performance ratio available today."

The ADIS16135 is a high-performance single-axis digital gyroscope with a 300/s measurement range, a low noise level of 0.0122s/hr, and operates over a wide

335Hz bandwidth using a single 4.85V to 5.15V voltage supply. The device is factory calibrated for temperature and voltage drift and provides superior linear acceleration sensitivity of only 0.03/s/g. It is also interface-compatible with all iSensor products, including the ADIS16385 IMU and others in the ADIS1636X series, further simplifying customer integration and migration plans.

The ADIS16385 is a complete inertial measurement unit that includes a 300/s tri-axis gyroscope and a 5g tri-axis accelerometer. Tactical grade performance of 6/hr is available on the z axis gyro, with inertial grade performance provided on the x and y axis, providing a balanced price-performance solution for those applications with a primary axis of concern. The ADIS16385 IMU and the ADIS16135 gyro contain user-configurable internal filtering and multiple condition-monitoring options.

The ADIS16135 gyro and the ADIS16385 IMU are interface-compatible with current-generation IMUs, such as ADI's ADIS1635x, ADIS1636x and ADIS1640x. Both devices operate over the temperature range of -40C to +105C. The ADIS16135, in 36mm x 44mm x 14mm module package, is priced at $499. The ADIS16385 in 36mm x 47mm x 39mm module package is priced at $869.





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