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ADXL350BCEZ-RL Arkusz danych(PDF) 1 Page - Analog Devices |
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ADXL350BCEZ-RL Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 36 page 3-Axis, ±1g/±2g/±4g/±8g Digital Accelerometer Data Sheet ADXL350 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2012 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Excellent zero-g bias accuracy and stability with minimum/maximum specifications Ultralow power: as low as 45 μA in measurement mode and 0.1 μA in standby mode at VS = 2.5 V (typical) Power consumption scales automatically with bandwidth User-selectable resolution Fixed 10-bit resolution Full resolution, where resolution increases with g range, up to 13-bit resolution at ±8 g (maintains 2 mg/LSB scale factor in all g ranges) Embedded, 32-level FIFO buffer minimizes host processor load Tap/double tap detection and free-fall detection Activity/inactivity monitoring Supply voltage range: 2.0 V to 3.6 V I/O voltage range: 1.7 V to VS SPI (3- and 4-wire) and I2C digital interfaces Flexible interrupt modes mappable to either interrupt pin Measurement ranges selectable via serial command Bandwidth selectable via serial command Wide temperature range (−40°C to +85°C) 10,000 g shock survival Pb-free/RoHS compliant Small and thin: 4 mm × 3 mm × 1.2 mm cavity LGA package APPLICATIONS Portable consumer devices High performance medical and industrial applications GENERAL DESCRIPTION The high performance ADXL350 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) and selectable measurement ranges up to ±8 g. The ADXL350 offers industry- leading noise and temperature performance for application robustness with minimal calibration. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface. The ADXL350 is well suited for high performance portable applications. It measures the static acceleration of gravity in tilt- sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (2 mg/LSB) enables measurement of inclination changes of less than 1.0°. Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation. The ADXL350 is supplied in a small, thin, 3 mm × 4 mm × 1.2 mm, 16-lead cavity laminate package. FUNCTIONAL BLOCK DIAGRAM 3-AXIS SENSOR SENSE ELECTRONICS DIGITAL FILTER ADXL350 POWER MANAGEMENT CONTROL AND INTERRUPT LOGIC SERIAL I/O INT1 VS VDD I/O INT2 SDA/SDI/SDIO SDO/ALT ADDRESS SCL/SCLK GND ADC 32 LEVEL FIFO CS Figure 1. |
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