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ADXRS649BBGZ-RL Folha de dados(PDF) 1 Page - Analog Devices |
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ADXRS649BBGZ-RL Folha de dados(HTML) 1 Page - Analog Devices |
1 / 12 page Fast Starting, ±20,000°/sec Vibration Rejecting Rate Gyro Data Sheet ADXRS649 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2010–2012 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES High vibration rejection over wide frequency Ultrafast startup: 3 ms Measurement range extendable to ±50,000°/sec 10,000 g powered shock survivability Ratiometric to referenced supply 5 V single-supply operation Z-axis (yaw rate) response −40°C to +105°C operation Self-test on digital command Ultrasmall and light (<0.15 cc, <0.5 gram) Temperature sensor output RoHS compliant APPLICATIONS Sports equipment Industrial applications Platform stabilization High speed tachometry GENERAL DESCRIPTION The ADXRS649 is a complete angular rate sensor (gyroscope) that uses the Analog Devices, Inc., patented high volume BiMOS surface-micromachining process to make a complete gyro on one chip. An advanced, differential, quad sensor design rejects the influence of linear acceleration, enabling the ADXRS649 to offer rate sensing in harsh environments where shock and vibration are present. The output signal, RATEOUT (B1, A2), is a voltage proportional to the angular rate about the axis normal to the top surface of the package. The output is ratiometric with respect to a provided reference supply. An external capacitor is used to set the band- width. The measurement range is extendable to ±50,000°/sec by adding an external resistor. Low power consumption (3.5 mA) enables very low power consumption, and ultrafast startup (3 ms) allows for quick power cycling of the gyro. At 10 samples per second, a pair of CR2032 coin cells can power the ADXRS649 for three months. 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 VDD AGND PGND AVCC ST2 ST1 TEMP VRATIO CP1 CP2 CP3 CP4 CP5 SUMJ RATEOUT DEMOD ROUT 180k Ω ±1% 22nF 2.2nF 22nF 100nF 100nF 100nF DRIVE AMP MECHANICAL SENSOR CHARGE PUMP AND VOLTAGE REGULATOR COUT 5V 5V 5V (ADC REF) AC AMP VGA 25k Ω AT 25°C ADXRS649 25k Ω SELF-TEST Figure 1. |
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