Details, datasheet, quote on part number: ADXL312WACPZ
PartADXL312WACPZ
CategorySensors => Motion & Position Sensors => Accelerometers => 8826790
TitleAccelerometers 3-axis 1.5-12g accel Digital Output
Description

Analog Device ADXL312 3-axis accelerometer is designed as a small, low-power, 3-axis accelerometer with high 13-bit resolution measurement up to 12g. The device formats digital output data as 16-bit twos complement. The digital output data is accessible through either a 3- or 4-wire serial port interface (SPI) or an IC digital interface. The device measures the static acceleration of gravity in tilt-sensing applications. The device also measures dynamic acceleration resulting from motion or shock. ADXL312s high resolution of 2.9mg/LSB allows resolution of inclination changes of as little as 0.25. The ADXL312 accelerometer's embedded FIFO technology facilitates oversampling techniques to improve resolution to as little as 0.05 of inclination. The ADXL312 accelerometer also offers special sensing functions. ADXL312s activity and inactivity sensing detects the presence or absence of motion. The activity and inactivity sensing also detects if the acceleration on any axis exceeds a user-set level. Low-power modes allow intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low-power dissipation. Qualified for automotive applications and operating across a 40 to +105C temperature range, the ADXL312 3-axis accelerometer is well-suited for car alarm and black-box applications.

CompanyAnalog Devices
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Specifications 
Product CategoryAccelerometers
ManufacturerAnalog Devices Inc.
Sensor Type3-axis
Sensing AxisX, Y, Z
Acceleration1.5 g, 3 g, 6 g, 12 g
Sensitivity43 LSB/g, 86 LSB/g, 172 LSB/g, 345 LSB/g
Output TypeDigital
Interface TypeI2C, SPI
Resolution16 bit
Supply Voltage - Max3.6 V
Supply Voltage - Min2 V
Operating Supply Current170 uA
Package/CaseLFCSP-32
Maximum Operating Temperature+ 105 C
Minimum Operating Temperature- 40 C
BrandAnalog Devices
Mounting StyleSMD/SMT
PackagingTube
SeriesADXL312
Factory Pack Quantity60
Type3-Axis Digital Accelerometer
ADXL312WACPZ photo

 

Features, Applications
FEATURES

Ultralow power: as low A in measurement mode and A in standby mode 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, to 13-bit resolution 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: 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 10,000 g shock survival Pb free/RoHS compliant Small and thin: 1.45 mm LFCSP package Qualified for automotive applications

The is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement 12 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a serial port interface (SPI) 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 mg/LSB) enables resolution of inclination changes of as little 0.25. A built-in FIFO facilitates using oversampling techniques to improve resolution to as little 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 1.45 mm, 32-lead, LFCSP package.

APPLICATIONS
Car alarm Hill start aid (HSA) Electronic parking brake Data recorder (black box)

Protected by U.S. Patent 8,156,264B2. Document Feedback One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 20102015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

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ADXL312 Material Declaration PCN-PDN Information Quality And Reliability Symbols and Footprints

ADXL312Z Breakout Board Real Time Eval System for Digital Output Sensor

Data Sheet g/12 g Digital Accelerometer Data Sheet User Guides UG-209: ADXL312 Sensor Evaluation System UG-281: ADXL312 Quick Start User Guide View all ADXL312 EngineerZone Discussions.

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Features.............................................................................................. 1 Applications....................................................................................... 1 General Description......................................................................... 1 Functional Block Diagram.............................................................. 1 Revision History............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Thermal Resistance...................................................................... 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics............................................. 7 Theory of Operation...................................................................... 10 Power Sequencing...................................................................... 10 Power Savings.............................................................................. 10 Serial Communications................................................................. 12 SPI................................................................................................. 12 I C................................................................................................. 15 Interrupts..................................................................................... 17

FIFO............................................................................................. 18 Self-Test....................................................................................... 19 Register Map................................................................................... 20 Register Definitions................................................................... 21 Applications Information.............................................................. 25 Power Supply Decoupling......................................................... 25 Mechanical Considerations for Mounting.............................. 25 Threshold.................................................................................... 25 Link Mode................................................................................... 25 Sleep Mode vs. Low Power Mode............................................. 25 Using Self-Test............................................................................ 26 Data Formatting of Upper Data Rates..................................... 27 Noise Performance..................................................................... 28 Axes of Acceleration Sensitivity............................................... 29 Solder Profile................................................................................... 30 Outline Dimensions....................................................................... 31 Ordering Guide.......................................................................... 32 Automotive Products................................................................. 32

0 to Rev. A Changes to Features Section............................................................ 1 Changes to Pin 22 Description, Table 4......................................... 6 Changes to Serial Communications Section, SPI Section, Figure 21, and Figure 22................................................................ 12 Added Serial Port I/O Default States Section............................. 12 Added Preventing Bus Traffic Errors Section and Figure 23; Renumbered Sequentially............................................................. 13 Changes to FIFO Section............................................................... 18 Changes to Figure 12/10--Revision 0: Initial Version


 

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