Vibration Rejecting 250/s Yaw Rate Gyroscope Data Sheet ADXRS642 FEATURES GENERAL DESCRIPTION Complete rate gyroscope on a single chip The ADXRS642 is a complete angular rate sensor (gyroscope) Z-axis (yaw rate) response that uses the Analog Devices, Inc., surface-micromachining 20/hour bias stability process to make a functionally complete and low cost angular rate 0.02/second angle random walk sensor integrated with all of the required electronics on one chip. High vibration rejection over a wide frequency The manufacturing technique for this device is a patented high 10,000 g powered shock survivability volume BiMOS process with years of proven field reliability. Ratiometric to referenced supply The ADXRS642 is an industrial grade gyroscope that is 100% 5 V single supply operation pin, package, temperature, and function compatible with the 40C to +105C operation ADXRS622 and ADXRS652, while offering enhanced vibration Self-test on digital command rejection Ultrasmall and light (<0.15 cc, <0.5 gram) The output signal, RATEOUT (1B, 2A), is a voltage propor- Temperature sensor output tional to angular rate about the axis normal to the top surface RoHS compliant of the package. The measurement range is a minimum of 250/s. The output is ratiometric with respect to a provided APPLICATIONS reference supply. Other external capacitors are required for Industrial applications operation. Inertial measurement units A temperature output is provided for compensation techniques. Severe mechanical environments Two digital self-test inputs electromechanically excite the sensor Platform stabilization to test proper operation of both the sensor and the signal condi- tioning circuits. The ADXRS642 is available in a 7 mm 7 mm 3 mm BGA chip-scale package. FUNCTIONAL BLOCK DIAGRAM 3V TO 5V (ADC REF) 100nF 5V ST2 ST1 TEMP V RATIO AV ADXRS642 CC 100nF 25k SELF-TEST 25k 25C AGND DEMOD MECHANICAL DRIVE AC VGA SENSOR AMP AMP 5V 180k 1% V DD CHARGE PUMP AND VOLTAGE 100nF REGULATOR PGND CP1 CP2 CP3 CP4 CP5 SUMJ RATEOUT 100nF 22nF 22nF C OUT Figure 1. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. 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Technical Support www.analog.com 09770-001ADXRS642 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation .........................................................................8 Applications ....................................................................................... 1 Setting Bandwidth .........................................................................8 General Description ......................................................................... 1 Temperature Output and Calibration .........................................8 Functional Block Diagram .............................................................. 1 Supply Ratiometricity ...................................................................8 Revision History ............................................................................... 2 Modifying the Measurement Range ...........................................9 Specifications ..................................................................................... 3 Null Adjustment ............................................................................9 Absolute Maximum Ratings ............................................................ 4 Self-Test Function .........................................................................9 Rate Sensitive Axis ....................................................................... 4 Continuous Self-Test .....................................................................9 ESD Caution .................................................................................. 4 Mechanical Performance ..............................................................9 Pin Configuration and Function Descriptions ............................. 5 Outline Dimensions ....................................................................... 10 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 10 REVISION HISTORY 10/12Rev. 0 to Rev. A Changes to Figure 1 .......................................................................... 1 Changes to Figure 10 ........................................................................ 7 Updated Outline Dimensions ....................................................... 10 4/11Revision 0: Initial Version Rev. A Page 2 of 12