ADXL345

更新时间： 2024-02-09 04:49:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	310K
描述
Three-Axis, ±2/4/8/16g Digital Accelerometer

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ADXL345 数据手册

Three-Axis, 2/4/8/16g

Digital Accelerometer

ADXL345

Preliminary Technical Data

FEATURES

GENERAL DESCRIPTION

Ultra low power: 25 to 130 µA at V_S= 2.5 V (typ)

The ADXL345 is a small, thin, low power, three-axis

accelerometer with high resolution (13-bit) measurement up to

16 g. Digital output data is formatted as 16-bit twos

complement and is accessible through either a SPI (3- or 4-

wire) or I²C digital interface.

Power consumption scales automatically with bandwidth

User selectable fixed 10-bit resolution or 4mg/LSB scale

factor in all g-ranges, up to 13-bit resolution at 16 g

32 level output data FIFO minimizes host processor load

Built in motion detection functions

The ADXL345 is well suited for mobile device 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 (4mg/LSB) enables

resolution of inclination changes of as little as 0.25°.

•

Tap/Double Tap detection

Activity/Inactivity monitoring

Free-Fall detection

Supply and I/O voltage range: 1.8 V to 3.6 V

SPI (3 and 4 wire) and I²C digital interfaces

Flexible interrupt modes – Any interrupt mappable to either

interrupt pin

Several special sensing functions are provided. Activity and

inactivity sensing detect the presence or lack of motion and if

the acceleration on any axis exceeds a user-set level. Tap sensing

detects single and double taps. Free-Fall sensing detects if the

device is falling. 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.

Measurement ranges selectable via serial command

Bandwidth selectable via serial command

Wide temperature range (-40 to +85°C)

10,000 g shock survival

Pb free/RoHS compliant

Small and thin: 3 × 5 × 1 mm LGA package

Low power modes enable intelligent motion-based power

management with threshold sensing and active acceleration

measurement at extremely low power dissipation.

APPLICATIONS

Handsets

Gaming and pointing devices

Personal navigation devices

HDD protection

The ADXL345 is supplied in a small, thin 3 mm × 5 mm ×

1 mm, 14-lead, plastic package.

Fitness equipment

Digital cameras

FUNCTIONAL BLOCK DIAGRAM

V_DDI/O

POWER

MANAGEMENT

INT1

INT2

CONTROL

AND

INTERRUPT

LOGIC

SENSE

DIGITAL

FILTER

ELECTRONICS

3 AXIS

SENSOR

SDA/SDI/SDIO

SERIAL I/O

ADXL345

SDO/ALT

ADDRESS

SCL/SCLK

COM

Figure 1. ADXL345 Simplified Block Diagram

Rev. PrA

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADXL345相关器件

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ADXL345BCCZ	ADI	获取价格	Digital Accelerometer
ADXL345BCCZ1	ADI	获取价格	Three-Axis, ±2/4/8/16g Digital Accelerometer
ADXL345BCCZ-RL	ADI	获取价格	Digital Accelerometer
ADXL345BCCZ-RL1	ADI	获取价格	Three-Axis, ±2/4/8/16g Digital Accelerometer
ADXL345BCCZ-RL7	ADI	获取价格	Digital Accelerometer
ADXL345BCCZ-RL71	ADI	获取价格	Three-Axis, ±2/4/8/16g Digital Accelerometer
ADXL345TCCZ-EP	ADI	获取价格	Digital Accelerometer
ADXL345TCCZ-EP-RL	ADI	获取价格	3-Axis, ±2 g/±4 g/±8 g/±16 g Digital Accelero
ADXL345TCCZ-EP-RL7	ADI	获取价格	3-Axis, ±2 g/±4 g/±8 g/±16 g Digital Accelero
ADXL346	ADI	获取价格	3-Axis, ±2 g/±4 g/±8 g/±16 g Ultralow Power D

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