ADXL312 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADXL312
Manufacturer

ADI
ChipWorker Part#

CW760461054
Description

Three-axis,
Documentation

Datasheet

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ADXL312 Specifications

Attribute	Attribute Value

Part Number	ADXL312
Manufacturer	ADI
ChipWorker Part#	CW760461054
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The ADXL312 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement up to ±12 _g_. Digital output data is formatted as 16-bit twos complement and is accessible through either a serial port interface (SPI) (3- or 4-wire) or I2C digital interface.
The ADXL312 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 (2.9 m_g_/LSB) enables resolution of inclination changes of as little as 0.25°. A built-in FIFO facilitates using oversampling techniques to improve resolution to as little as 0.05° of inclination.
Several special 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.
Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.
The ADXL312 is supplied in a small, thin 5 mm × 5 mm × 1.45 mm, 32-lead, LFCSP package.
**Applications**
Car alarm
Hill start aid (HSA)
Electronic parking brake
Data recorder (black box)
### Features and Benefits
Ultralow power: as low as 57 μA in measurement mode and 0.1 μA in standby mode at VS = 3.3 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 ±12 _g_ (maintaining 2.9 mg/LSB scale factor in all _g_ ranges)
Embedded FIFO technology minimizes host processor load
Built-in motion detection functions for activity/inactivity monitoring
Supply and I/O voltage range: 2.0 V to 3.6 V
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 to +105°C)
10,000 _g_ shock survival
Pb free/RoHS compliant
Small and thin: 5 mm × 5 mm × 1.45 mm LFCSP package
Qualified for automotive applications

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