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ADXL321EB Folha de dados(PDF) 1 Page - Analog Devices |
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ADXL321EB Folha de dados(HTML) 1 Page - Analog Devices |
1 / 16 page Small and Thin ±18 g Accelerometer ADXL321 Rev. 0 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 that may result from its use. Specifications subject to change without notice. No 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES Small and thin 4 mm × 4 mm × 1.45 mm LFCSP package 3 mg resolution at 50 Hz Wide supply voltage range: 2.4 V to 6 V Low power: 350 µA at VS = 2.4 V (typ) Good zero g bias stability Good sensitivity accuracy X-axis and Y-axis aligned to within 0.1° (typ) BW adjustment with a single capacitor Single-supply operation 10,000 g shock survival Compatible with Sn/Pb and Pb-free solder processes APPLICATIONS Vibration monitoring and compensation Abuse event detection Sports equipment GENERAL DESCRIPTION The ADXL321 is a small and thin, low power, complete dual- axis accelerometer with signal conditioned voltage outputs, which is all on a single monolithic IC. The product measures acceleration with a full-scale range of ±18 g (typical). It can also measure both dynamic acceleration (vibration) and static acceleration (gravity). The ADXL321’s typical noise floor is 320 µg/√Hz, allowing signals below 3 mg to be resolved in tilt-sensing applications using narrow bandwidths (<50 Hz). The user selects the bandwidth of the accelerometer using capacitors CX and CY at the XOUT and YOUT pins. Bandwidths of 0.5 Hz to 2.5 kHz may be selected to suit the application. The ADXL321 is available in a very thin 4 mm × 4 mm × 1.45 mm, 16-lead, plastic LFCSP. FUNCTIONAL BLOCK DIAGRAM ADXL321 SENSOR +3V OUTPUT AMP OUTPUT AMP COM ST VS CDC DEMOD AC AMP RFILT 32k Ω XOUT CX YOUT CY RFILT 32k Ω Figure 1. |
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