EVAL-ADXL325Z Analog Devices Inc, EVAL-ADXL325Z Datasheet

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EVAL-ADXL325Z

Manufacturer Part Number
EVAL-ADXL325Z
Description
Accelerometer Eval. Board
Manufacturer
Analog Devices Inc
Series
iMEMS®r
Datasheets

Specifications of EVAL-ADXL325Z

Silicon Manufacturer
Analog Devices
Application Sub Type
Accelerometer - Three-Axis
Kit Application Type
Sensing - Motion / Vibration / Shock
Silicon Core Number
ADXL325
Sensor Type
Accelerometer, 3 Axis
Sensing Range
±6g
Interface
Analog
Sensitivity
174mV/g
Voltage - Supply
1.8 V ~ 3.6 V
Embedded
*
Utilized Ic / Part
ADXL325
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
3-axis sensing
Small, low profile package
Low power: 350 μA typical
Single-supply operation: 1.8 V to 3.6 V
10,000 g shock survival
Excellent temperature stability
Bandwidth adjustment with a single capacitor per axis
RoHS/WEEE lead-free compliant
APPLICATIONS
Cost-sensitive, low power, motion- and tilt-sensing applications
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 registered trademarks are the property of their respective owners.
4 mm × 4 mm × 1.45 mm LFCSP
Mobile devices
Gaming systems
Disk drive protection
Image stabilization
Sports and health devices
C
DC
ADXL325
+3V
COM
SENSOR
V
3-AXIS
S
FUNCTIONAL BLOCK DIAGRAM
ST
AC AMP
Figure 1.
DEMOD
Small, Low Power, 3-Axis ±5 g
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The ADXL325 is a small, low power, complete 3-axis accelerometer
with signal conditioned voltage outputs. The product measures
acceleration with a minimum full-scale range of ±5 g. It can
measure the static acceleration of gravity in tilt-sensing applications,
as well as dynamic acceleration, resulting from motion, shock,
or vibration.
The user selects the bandwidth of the accelerometer using
the C
Bandwidths can be selected to suit the application with a range
of 0.5 Hz to 1600 Hz for X and Y axes and a range of 0.5 Hz to
550 Hz for the Z axis.
The ADXL325 is available in a small, low profile, 4 mm ×
4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package
(LFCSP_LQ).
X
OUTPUT AMP
OUTPUT AMP
OUTPUT AMP
, C
Y
, and C
Z
~32kΩ
~32kΩ
~32kΩ
capacitors at the X
©2009 Analog Devices, Inc. All rights reserved.
X
Y
Z
OUT
OUT
OUT
C
C
C
X
Y
Z
Accelerometer
OUT
, Y
OUT
ADXL325
, and Z
www.analog.com
OUT
pins.

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EVAL-ADXL325Z Summary of contents

Page 1

FEATURES 3-axis sensing Small, low profile package 4 mm × × 1.45 mm LFCSP Low power: 350 μA typical Single-supply operation: 1 3.6 V 10,000 g shock survival Excellent temperature stability Bandwidth adjustment with a single ...

Page 2

ADXL325 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ...

Page 3

SPECIFICATIONS T = 25° 0.1 μF, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. ...

Page 4

ADXL325 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Rating Acceleration (Any Axis, Unpowered) 10,000 g Acceleration (Any Axis, Powered) 10,000 g V −0 +3 All Other Pins (COM − 0 Output Short-Circuit Duration Indefinite ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic COM COM 6 COM 7 COM 8 Z OUT OUT OUT ...

Page 6

ADXL325 TYPICAL PERFORMANCE CHARACTERISTICS N > 1000 for all typical performance plots, unless otherwise noted 1.46 1.47 1.48 1.49 1.5 1.51 OUTPUT (V) Figure 3. X-Axis Zero g Bias at 25° ...

Page 7

TEMPERATURE COEFFICIENT (mg/°C) Figure 9. X-Axis Zero g Bias Temperature Coefficient –1.4 –1.0 –0.6 –0.2 0.2 ...

Page 8

ADXL325 0.164 0.166 0.168 0.170 0.172 0.174 SENSITIVITY (V/g) Figure 15. X-Axis Sensitivity at 25° 0.164 0.166 0.168 0.170 0.172 0.174 SENSITIVITY (V/ ...

Page 9

SUPPLY (V) Figure 21. Typical Current Consumption vs. Supply Voltage 3.5 4.0 Rev Page ADXL325 CH4 500mV/DIV OUT ...

Page 10

ADXL325 THEORY OF OPERATION The ADXL325 is a complete 3-axis acceleration measurement system. The ADXL325 has a measurement range of ±5 g minimum. It contains a polysilicon surface micromachined sensor and signal conditioning circuitry to implement an open- loop acceleration ...

Page 11

APPLICATIONS INFORMATION POWER SUPPLY DECOUPLING For most applications, a single 0.1 μF capacitor, C close to the ADXL325 supply pins adequately decouples the accelerometer from noise on the power supply. However, in applications where noise is present at the 50 ...

Page 12

ADXL325 Self test response roughly proportional to the square of the supply voltage. However, when ratiometricity of sensitivity is factored in with supply voltage, the self test response in volts is roughly proportional to the cube of ...

Page 13

LAYOUT AND DESIGN RECOMMENDATIONS The recommended soldering profile is shown in Figure 25, followed by a description of the profile features in Table 6. The recommended PCB layout or solder land drawing is shown in Figure 26 Table ...

Page 14

... SEATING PLANE ORDERING GUIDE Model Measurement Range 1 ADXL325BCPZ ± ADXL325BCPZ–RL ± ADXL325BCPZ–RL7 ± EVAL-ADXL325Z RoHS Compliant Part. 0.20 MIN 0.20 MIN 13 12 4.15 EXPOSED 4.00 SQ PAD TOP VIEW (BOTTOM VIEW) 3.85 0.65 BSC 9 8 0.55 0.50 ...

Page 15

NOTES Rev Page ADXL325 ...

Page 16

ADXL325 NOTES Analog Devices offers specific products designated for automotive applications; please consult your local Analog Devices sales representative for details. Standard products sold by Analog Devices are not designed, intended, or approved for use in life support, implantable medical ...

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