ADXL313 3-Axis, ±0.5 g/±1 g/±2 g/±4 g Digital Accelerometer

The ADXL313 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement up to ±4g. Digital output data is formatted as 16-bit twos complement and is accessible through either a serial port interface (SPI) (3-wire or 4-wire) or I2C digital interface.

The ADXL313 is well suited for car alarm or black box 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 (1024 LSB/g) and low noise (150 μg/√Hz) enable resolution of inclination changes of as little as 0.1°. A built-in FIFO facilitates using oversampling techniques to improve resolution to as little as 0.025° of inclination.

Several built-in sensing functions are provided. Activity and inactivity sensing detects the presence or absence of motion and whether the acceleration on any axis exceeds a user-set level. These functions can be mapped to interrupt output pins. An integrated 32-level FIFO can be used to store data to minimize host processor intervention, resulting in reduced system power consumption.

Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.

The ADXL313 is supplied in a small, thin 5 mm × 5 mm × 1.45 mm, 32-lead LFCSP package and is pin compatible with the ADXL312 accelerometer device.

Applications
  • Car alarms
  • Hill start aid (HSA) systems
  • Electronic parking brakes
  • Data recorders (black boxes)
Features and Benefits
  • Ultralow power (scales automatically with data rate)
    • As low as 30 μA in measurement mode (VS = 3.3 V)
    • As low as 0.1 μA in standby mode (VS = 3.3 V)
  • Low noise performance
    • 150 μg/√Hz typical for X- and Y-axes
    • 250 μg/√Hz typical for the Z-axis
  • Embedded, patent pending FIFO technology minimizes host processor load
  • User-selectable resolution
    • Fixed 10-bit resolution for any g range
    • Fixed 1024 LSB/g sensitivity for any g range
    • Resolution scales from 10-bit at ±0.5 g to 13-bit at ±4 g
  • Built-in motion detection functions for activity/inactivity monitoring
  • Supply and I/O voltage range: 2.0 V to 3.6 V
  • See data sheet for additional features
MEMS
Aerospace and Defense
  • Solutions
Data Sheets
Documentnote
ADXL313: 3-Axis, ±0.5 g/±1 g/±2 g/±4 g Digital Accelerometer Data Sheet (Rev. B)PDF 591 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADXL313WACPZ-RL Production32 ld LFCSP (5x5x.1.55mm) w/3.6exposed padREEL 4000-40 to 105C03.42E
ADXL313WACPZ-RL7 Production32 ld LFCSP (5x5x.1.55mm) w/3.6exposed padREEL 1000-40 to 105C03.42E
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-ADXL313-ZBreakout Board49Y
ADXL313: 3-Axis, ±0.5 g/±1 g/±2 g/±4 g Digital Accelerometer Data Sheet (Rev. B) adxl313
ADXL313:3轴、±0.5 g/±1 g/±2 g/±4 g数字加速度计 (Rev. 0) adxl313