Datasheet > EVAL-ADXL212Z

EVAL-ADXL212Z

更新时间： 2024-09-16 12:55:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	262K
描述
Precision Â±2 g Dual Axis, PWM Output Accelerometer

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EVAL-ADXL212Z 数据手册

Precision ± ± g Dual Axis,

PWM Output Accelerometer

ADXL±1±

FEATURES

GENERAL DESCRIPTION

Dual axis accelerometer on a single IC chip

5 mm × 5 mm × 2 mm LCC package

5 mg resolution at 60 Hz

Low power: 700 μA at V_S= 5 V (typical)

High zero g bias stability

The ADXL212 is a high precision, low power, complete dual

axis accelerometer with signal conditioned, duty cycle modulated

outputs, all on a single monolithic IC. The ADXL212 measures

acceleration with a full-scale range of 2 g (typical). The ADXL212

measures both dynamic acceleration (such as vibration) and

static acceleration (such as gravity).

High sensitivity accuracy

Pulse width modulated digital outputs

X- and Y-axis aligned to within 0.1° (typical)

Bandwidth adjustment with a single capacitor

Single-supply operation

The outputs are digital signals whose duty cycles (ratio of pulse

width to period) are proportional to acceleration (12.5%/g) in

each of the two sensitive axes. The duty cycle outputs can be

directly measured by a microcontroller without an analog-to-

digital converter (ADC) or glue logic. The output period is

adjustable from 0.5 ms to 10 ms via a single resistor (R_SET).

3500 g shock survival

APPLICATIONS

Automotive tilt alarms

Vehicle dynamic control (VDC)/electronic stability program

(ESP) systems

The typical noise floor is 500 μg/√Hz, allowing signals below

5 mg (0.3° of inclination) to be resolved in tilt sensing applica-

tions using narrow bandwidths (<60 Hz).

Electronic chassis control

Electronic braking

Data projectors

The user selects the bandwidth of the accelerometer using

Capacitors C_Xand C_Yat the X_FILTand Y_FILTpins. Bandwidths

of 0.5 Hz to 500 Hz can be selected to suit the application.

Navigation

The ADXL212 is available in a 5 mm × 5 mm × 2 mm, 8-lead

hermetic LCC package.

Platform stabilization/leveling

Alarms and motion detectors

High accuracy, 2-axis tilt sensing

FUNCTIONAL BLOCK DIAGRAM

FILT

ADXL212

32kΩ

OUTPUT

AMP

OUT

AMP

DEMOD

DCM

OUTPUT

AMP

SENSOR

COM

FILT

SET

PWM OUTPUT WAVEFORM SAMPLE

A(g) = (t1/t2 – 0.5)/12.5%

0g = 50% DUTY CYCLE

t2(sec) = R

/125MΩ

SET

Figure 1.

Rev. 0

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

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

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

Trademarks and registeredtrademarks arethe property of their respective owners.

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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EVAL-ADXL313-Z-M	ADI	获取价格	3-Axis, Â±0.5 g/Â±1 g/Â±2 g/Â±4 g Digital Acc
EVAL-ADXL313-Z-S	ADI	获取价格	3-Axis, Â±0.5 g/Â±1 g/Â±2 g/Â±4 g Digital Acc
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EVAL-ADXL325Z	ADI	获取价格	Small, Low Power, 3-Axis ±5 g Accelerometer
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EVAL-ADXL327Z	ADI	获取价格	Small, Low Power, 3-Axis ±2 g Accelerometer
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