ADXL313WACPZ-RL7

ANALOG DEVICES  ADXL313WACPZ-RL7  加速度计, MEMS, I2C, SPI, 数字, X, Y, Z, ± 0.5g, ± 1 g, ± 2 g, ± 4 g, 2 V, 3.6 V, LFCSP 新

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**

.

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 μ_g_/√Hz typical for X- and Y-axes

.

250 μ_g_/√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