Fast Starting, 20,000/sec Vibration Rejecting Rate Gyro Data Sheet ADXRS649 FEATURES GENERAL DESCRIPTION High vibration rejection over wide frequency The ADXRS649 is a complete angular rate sensor (gyroscope) Ultrafast startup: 3 ms that uses the Analog Devices, Inc., patented high volume BiMOS Measurement range extendable to 50,000/sec surface-micromachining process to make a complete gyro on 10,000 g powered shock survivability one chip. An advanced, differential, quad sensor design rejects Ratiometric to referenced supply the influence of linear acceleration, enabling the ADXRS649 5 V single-supply operation to offer rate sensing in harsh environments where shock and Z-axis (yaw rate) response vibration are present. 40C to +105C operation The output signal, RATEOUT (B1, A2), is a voltage proportional Self-test on digital command to the angular rate about the axis normal to the top surface of Ultrasmall and light (<0.15 cc, <0.5 gram) the package. The output is ratiometric with respect to a provided Temperature sensor output reference supply. An external capacitor is used to set the band- RoHS compliant width. The measurement range is extendable to 50,000/sec by adding an external resistor. APPLICATIONS Low power consumption (3.5 mA) enables very low power Sports equipment consumption, and ultrafast startup (3 ms) allows for quick Industrial applications power cycling of the gyro. At 10 samples per second, a pair of Platform stabilization CR2032 coin cells can power the ADXRS649 for three months. High speed tachometry A temperature output is provided for compensation techniques. Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal condi- tioning circuits. The ADXRS649 is available in a 7 mm 7 mm 3 mm CBGA chip scale package. FUNCTIONAL BLOCK DIAGRAM 5V (ADC REF) 100nF 5V ST2 ST1 TEMP V RATIO ADXRS649 AV CC 100nF 25k SELF-TEST 25k AT 25C AGND DEMOD MECHANICAL AC DRIVE VGA SENSOR AMP AMP R OUT 5V 180k 1% V DD CHARGE PUMP AND VOLTAGE 100nF REGULATOR PGND CP2 CP3 SUMJ RATEOUT CP1 CP4 CP5 2.2nF C 22nF 22nF OUT Figure 1. Rev. B 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. No Tel: 781.329.4700 20102012 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 09573-001ADXRS649 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................6 Applications ....................................................................................... 1 Theory of Operation .........................................................................9 General Description ......................................................................... 1 Setting the Bandwidth ..................................................................9 Functional Block Diagram .............................................................. 1 Temperature Output and Calibration ...................................... 10 Revision History ............................................................................... 2 Modifying the Measurement Range ........................................ 10 Specifications ..................................................................................... 3 Null Bias Adjustment ................................................................. 10 Absolute Maximum Ratings ............................................................ 4 Self-Test Function ...................................................................... 10 Rate Sensitive Axis ....................................................................... 4 Continuous Self-Test .................................................................. 10 ESD Caution .................................................................................. 4 Outline Dimensions ....................................................................... 11 Pin Configuration and Function Descriptions ............................. 5 Ordering Guide .......................................................................... 11 REVISION HISTORY 10/12Rev. A to Rev. B Changes to Figure 1 .......................................................................... 1 Changed Sensor Resonant Frequency Minimum Parameter from 16 kHz to 15.5 kHz ................................................................. 1 Changed Sensor Resonant Frequency Typical Parameter from 18 kHz to 17.5 kHz ........................................................................... 3 3/11Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 11 12/10Revision 0: Initial Version Rev. B Page 2 of 12