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ADXL210 Arkusz danych(PDF) 1 Page - Analog Devices |
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ADXL210 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 11 page REV. B 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 rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Low Cost 2 g/ 10 g Dual Axis iMEMS ® Accelerometers with Digital Output ADXL202/ADXL210 FEATURES 2-Axis Acceleration Sensor on a Single IC Chip Measures Static Acceleration as Well as Dynamic Acceleration Duty Cycle Output with User Adjustable Period Low Power <0.6 mA Faster Response than Electrolytic, Mercury or Thermal Tilt Sensors Bandwidth Adjustment with a Single Capacitor Per Axis 5 m g Resolution at 60 Hz Bandwidth +3 V to +5.25 V Single Supply Operation 1000 g Shock Survival APPLICATIONS 2-Axis Tilt Sensing Computer Peripherals Inertial Navigation Seismic Monitoring Vehicle Security Systems Battery Powered Motion Sensing AIN2 = One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 FUNCTIONAL BLOCK DIAGRAM DEMOD RFILT 32k RFILT 32k OSCILLATOR X SENSOR Y SENSOR ADXL202/ ADXL210 X OUT Y OUT SELF TEST XFILT VDD VDD CX +3.0V TO +5.25V CDC COM YFILT T2 CY RSET C O U N T E R P T2 T1 A( g) = (T1/T2 – 0.5)/12.5% 0 g = 50% DUTY CYCLE T2 = RSET/125M DEMOD DUTY CYCLE MODULATOR (DCM) GENERAL DESCRIPTION The ADXL202/ADXL210 are low cost, low power, complete 2-axis accelerometers with a measurement range of either ±2 g/±10 g. The ADXL202/ADXL210 can measure both dy- namic acceleration (e.g., vibration) and static acceleration (e.g., gravity). The outputs are digital signals whose duty cycles (ratio of pulse- width to period) are proportional to the acceleration in each of the 2 sensitive axes. These outputs may be measured directly with a microprocessor counter, requiring no A/D converter or glue logic. The output period is adjustable from 0.5 ms to 10 ms via a single resistor (RSET). If a voltage output is desired, a voltage output proportional to acceleration is available from the XFILT and YFILT pins, or may be reconstructed by filtering the duty cycle outputs. The bandwidth of the ADXL202/ADXL210 may be set from 0.01 Hz to 5 kHz via capacitors CX and CY. The typical noise floor is 500 µg/√Hz allowing signals below 5 mg to be resolved for bandwidths below 60 Hz. The ADXL202/ADXL210 is available in a hermetic 14-lead Surface Mount CERPAK, specified over the 0 °C to +70°C commercial or –40 °C to +85°C industrial temperature range. iMEMS is a registered trademark of Analog Devices, Inc. |
Podobny numer części - ADXL210_15 |
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Podobny opis - ADXL210_15 |
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