3-Axis, 0.5 g/1 g/2 g/4 g Digital Accelerometer Data Sheet ADXL313 FEATURES GENERAL DESCRIPTION Ultralow power (scales automatically with data rate) The ADXL313 is a small, thin, low power, 3-axis accelerometer As low as 30 A in measurement mode (V = 3.3 V) S with high resolution (13-bit) measurement up to 4 g. Digital As low as 0.1 A in standby mode (V = 3.3 V) S output data is formatted as 16-bit twos complement and is Low noise performance accessible through either a serial port interface (SPI) (3-wire or 2 150 g/Hz typical for X- and Y-axes 4-wire) or I C digital interface. 250 g/Hz typical for the Z-axis The ADXL313 is well suited for car alarm or black box Embedded, patent pending FIFO technology minimizes host applications. It measures the static acceleration of gravity in tilt- processor load sensing applications, as well as dynamic acceleration resulting User-selectable resolution from motion or shock. Its high resolution (1024 LSB/g) and low Fixed 10-bit resolution for any g range noise (150 g/Hz) enable resolution of inclination changes of as Fixed 1024 LSB/g sensitivity for any g range little as 0.1. A built-in FIFO facilitates using oversampling Resolution scales from 10-bit at 0.5 g to 13-bit at 4 g techniques to improve resolution to as little as 0.025 of Built-in motion detection functions for activity/inactivity inclination. monitoring Several built-in sensing functions are provided. Activity and Supply and I/O voltage range: 2.0 V to 3.6 V 2 inactivity sensing detects the presence or absence of motion SPI (3-wire and 4-wire) and I C digital interfaces and whether the acceleration on any axis exceeds a user-set Flexible interrupt modes mappable to two interrupt pins level. These functions can be mapped to interrupt output pins. Measurement range selectable via serial command An integrated 32-level FIFO can be used to store data to Bandwidth selectable via serial command minimize host processor intervention, resulting in reduced Wide temperature range (40C to +105C) system power consumption. 10,000 g shock survival Pb free/RoHS compliant Low power modes enable intelligent motion-based power Small and thin: 5 mm 5 mm 1.45 mm LFCSP package management with threshold sensing and active acceleration Qualified for automotive applications measurement at extremely low power dissipation. APPLICATIONS The ADXL313 is supplied in a small, thin 5 mm 5 mm 1.45 mm, 32-lead LFCSP package and is pin compatible with Car alarms the ADXL312 accelerometer device. Hill start aid (HSA) systems Electronic parking brakes Data recorders (black boxes) FUNCTIONAL BLOCK DIAGRAM V V S DD I/O ADXL313 POWER MANAGEMENT INT1 CONTROL SENSE DIGITAL AND ADC ELECTRONICS FILTER INTERRUPT 3-AXIS LOGIC INT2 SENSOR SDA/SDI/SDIO 32-LEVEL SERIAL I/O SDO/ALT FIFO ADDRESS SCL/SCLK GND CS Figure 1. Rev. C Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20132019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 11469-001ADXL313 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 FIFO ............................................................................................. 15 Applications ....................................................................................... 1 Self Test ........................................................................................ 16 General Description ......................................................................... 1 Register Map ................................................................................... 17 Functional Block Diagram .............................................................. 1 Register Definitions ................................................................... 18 Revision History ............................................................................... 2 Applications Information .............................................................. 22 Specif icat ions ..................................................................................... 3 Power Supply Decoupling ......................................................... 22 Absolute Maximum Ratings ............................................................ 4 Mechanical Considerations for Mounting .............................. 22 Thermal Resistance ...................................................................... 4 Threshold .................................................................................... 22 ESD Caution .................................................................................. 4 Link Mode ................................................................................... 22 Pin Configuration and Function Descriptions ............................. 5 Sleep Mode vs. Low Power Mode............................................. 22 Typical Performance Characteristics ............................................. 6 Using Self Test ............................................................................. 23 Theory of Operation ........................................................................ 8 3200 Hz and 1600 Hz ODR Data Formatting ........................ 24 Power Sequencing ........................................................................ 8 Axes of Acceleration Sensitivity ............................................... 25 Power Savings ............................................................................... 8 Solder Profile ................................................................................... 26 Serial Communications ................................................................. 10 Outline Dimensions ....................................................................... 27 SPI ................................................................................................. 10 Ordering Guide .......................................................................... 28 2 I C ................................................................................................. 13 Automotive Products ................................................................. 28 Interrupts ..................................................................................... 15 REVISION HISTORY 2/2019Rev. B to Rev. C Changes to Standby Mode Leakage Current Parameter, Table 1 ................................................................................................ 3 Updated Outline Dimensions ....................................................... 27 Changes to Ordering Guide .......................................................... 28 11/2015Rev. A to Rev. B Change to Register 0x02, Table 14 ................................................ 17 Changes to Register 0x02PARTID (Read Only) Section ....... 18 Change to Preheat Time (TSMIN to TSMAX) (tS) Parameter, Table 20 ............................................................................................ 26 11/2013Rev. 0 to Rev. A Changes to Figure 3, Figure 4, and Figure 5.................................. 6 4/2013Revision 0: Initial Version Rev. C Page 2 of 28