ADXL313WACPZ-RL

3轴， ±0.5克/ ±1克/ ±2克/ ± 4克数字加速度计 3-Axis, ±0.5 g/±1 g/±2 g/±4 g Digital Accelerometer

Product Details

The ADXL313 is a small, thin, low power, 3-axis accelerometer with high resolution 13-bit measurement up to ±4_g_. 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 μ_g_/√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**

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Car alarms

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Hill start aid HSA systems

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Electronic parking brakes

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Data recorders black boxes

### Features and Benefits

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Ultralow power scales automatically with data rate

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As low as 30 μA in measurement mode VS = 3.3 V

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As low as 0.1 μA in standby mode VS = 3.3 V

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Low noise performance

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150 μ_g_/√Hz typical for X- and Y-axes

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250 μ_g_/√Hz typical for the Z-axis

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Embedded, patent pending FIFO technology minimizes host processor load

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User-selectable resolution

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Fixed 10-bit resolution for any _g_ range

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Fixed 1024 LSB/_g_ sensitivity for any _g_ range

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Resolution scales from 10-bit at ±0.5 _g_ to 13-bit at ±4 _g_

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Built-in motion detection functions for activity/inactivity monitoring

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Supply and I/O voltage range: 2.0 V to 3.6 V

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See data sheet for additional features