Unlike alternative MEMS gyros, the ADXRS800’s unique architecture enables very accurate performance in exceedingly harsh automotive environments without the need for complex and costly system-level counter measures.
Further simplifying the system design, the gyro delivers better offset stability compared to alternatives without the need for calibration. Power consumption is claimed to be only 6 milliamps under typical conditions. The new gyro is available in a cavity plastic SOIC-16 (Z-axis) and a SMT-compatible vertical mount package (X-axis) and is capable of operating across an extended temperature range of -40 °C to 125 °C.
The ADXRS800’s continuous self-test architecture is said to simplify algorithms for failure detection and allows system designers to quickly integrate fault detection into their designs.
The integrity of the electromechanical system is checked by applying a high frequency electrostatic force to the sense structure allowing differentiation from real-rate stimulus in the base band that can be filtered so it does not interfere with sensor output. Angular rate data is presented as a 16-bit word, as part of a 32-bit serial peripheral interface (SPI) message.
Other features include internal temperature compensation over an extended industrial temperature range and an optional ceramic vertical-mount package that uniquely enables three-axis sensing on a single PCB without daughter boards. To order samples or download the data sheet, visit www.analog.com
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