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ADXL202E 数据表(PDF) 1 Page - Analog Devices |
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ADXL202E 数据表(HTML) 1 Page - Analog Devices |
1 / 12 page REV. A 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 ADXL202E* 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., 2000 Low-Cost 2 g Dual-Axis Accelerometer with Duty Cycle Output FUNCTIONAL BLOCK DIAGRAM ANALOG TO DUTY CYCLE (ADC) C O U N T E R P XOUT YOUT DEMOD DEMOD RFILT 32k RFILT 32k ADXL202E RSET T2 CY YFILT SELF-TEST XFILT CX OSCILLATOR COM Y SENSOR X SENSOR 3V TO 5.25V VDD CDC T1 T2 A(g) = (T1/T2 – 0.5)/12.5% 0g = 50% DUTY CYCLE T2 = RSET/125M FEATURES 2-Axis Acceleration Sensor on a Single IC Chip 5 mm 5 mm 2 mm Ultrasmall Chip Scale Package 2m g Resolution at 60 Hz Low-Power < 0.6 mA Direct Interface to Low-Cost Microcontrollers via Duty Cycle Output BW Adjustment with a Single Capacitor 3 V to 5.25 V Single Supply Operation 1000 g Shock Survival APPLICATIONS 2-Axis Tilt Sensing with Faster Response than Electrolytic, Mercury, or Thermal Sensors Computer Peripherals Information Appliances Alarms and Motion Detectors Disk Drives Vehicle Security GENERAL DESCRIPTION The ADXL202E is a low-cost, low-power, complete 2-axis acceler- ometer with a digital output, all on a single monolithic IC. It is an improved version of the ADXL202AQC/JQC. The ADXL202E will measure accelerations with a full-scale range of 2 g. The ADXL202E can measure both dynamic acceleration (e.g., vibra- tion) and static acceleration (e.g., gravity). The outputs are analog voltage or digital signals whose duty cycles (ratio of pulsewidth to period) are proportional to acceleration. The duty cycle outputs can be directly measured by a micro- processor counter, without an A/D converter or glue logic. The duty cycle period is adjustable from 0.5 ms to 10 ms via a single resistor (RSET). *Patents Pending The typical noise floor is 200 g √Hz, allowing signals below 2mg (at 60 Hz bandwidth) to be resolved. The bandwidth of the accelerometer is set with capacitors CX and CY at the XFILT and YFILT pins. An analog output can be recon- structed by filtering the duty cycle output. The ADXL202E is available in 5 mm 5 mm 2 mm 8-lead hermetic LCC package. |
类似零件编号 - ADXL202E |
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类似说明 - ADXL202E |
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