ADXL320EB Analog Devices Inc, ADXL320EB Datasheet

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ADXL320EB

Manufacturer Part Number
ADXL320EB
Description
BOARD EVAL FOR ADXL320
Manufacturer
Analog Devices Inc
Series
iMEMS®r
Datasheets

Specifications of ADXL320EB

Sensor Type
Accelerometer, 2 Axis
Sensing Range
±5g
Interface
Analog
Sensitivity
174mV/g
Voltage - Supply
2.4 V ~ 5.25 V
Embedded
No
Utilized Ic / Part
ADXL320
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
FEATURES
Small and thin
2 mg resolution at 60 Hz
Wide supply voltage range: 2.4 V to 5.25 V
Low power: 350 μA at V
Good zero g bias stability
Good sensitivity accuracy
X-axis and Y-axis aligned to within 0.1° (typ)
BW adjustment with a single capacitor
Single-supply operation
10,000 g shock survival
Compatible with Sn/Pb and Pb-free solder processes
APPLICATIONS
Cost-sensitive 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 package
Smart hand-held devices
Mobile phones
Sports and health-related devices
PC security and PC peripherals
S
= 2.4 V (typ)
C
DC
Small and Thin ±5 g iMEMS
+3V
SENSOR
FUNCTIONAL BLOCK DIAGRAM
V
COM
S
ADXL320
AMP
AC
ST
Figure 1.
DEMOD
GENERAL DESCRIPTION
The ADXL320 is a low cost, low power, complete dual-axis
accelerometer with signal conditioned voltage outputs, which is
all on a single monolithic IC. The product measures
acceleration with a full-scale range of ±5 g (typical). It can also
measure both dynamic acceleration (vibration) and static
acceleration (gravity).
The ADXL320’s typical noise floor is 250 μg/√Hz, allowing
signals below 2 mg to be resolved in tilt-sensing applications
using narrow bandwidths (<60 Hz).
The user selects the bandwidth of the accelerometer using
capacitors C
0.5 Hz to 2.5 kHz may be selected to suit the application.
The ADXL320 is available in a very thin 4 mm × 4 mm ×
1.45 mm, 16-lead, plastic LFCSP.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
R
32kΩ
FILT
OUTPUT
AMP
Y
C
OUT
Y
X
R
32kΩ
and C
FILT
OUTPUT
AMP
Y
X
C
© 2007 Analog Devices, Inc. All rights reserved.
at the X
OUT
X
OUT
®
and Y
Accelerometer
OUT
pins. Bandwidths of
ADXL320
www.analog.com

Related parts for ADXL320EB

ADXL320EB Summary of contents

Page 1

FEATURES Small and thin 4 mm × × 1.45 mm LFCSP package 2 mg resolution Wide supply voltage range: 2 5.25 V Low power: 350 μ 2.4 V (typ) S ...

Page 2

ADXL320 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics (V Theory of Operation ...................................................................... 11 Performance ................................................................................ 11 Applications..................................................................................... 12 Power Supply Decoupling ......................................................... 12 REVISION HISTORY ...

Page 3

SPECIFICATIONS T = 25° 0.1 μF, Acceleration = 0 g, unless otherwise noted Table 1. Parameter SENSOR INPUT Measurement Range Nonlinearity Package Alignment Error Alignment Error Cross ...

Page 4

ADXL320 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Acceleration (Any Axis, Unpowered) Acceleration (Any Axis, Powered All Other Pins Output Short-Circuit Duration (Any Pin to Common) Operating Temperature Range Storage Temperature ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic COM COM 6 COM 7 COM OUT OUT 13 ...

Page 6

ADXL320 Table 4. Recommended Soldering Profile Profile Feature Average Ramp Rate ( Preheat Minimum Temperature (T ) SMIN Maximum Temperature (T ) SMAX Time ( SMIN SMAX ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS ( 1.40 1.42 1.44 1.46 1.48 1.50 1.52 1.54 1.56 1.58 1.60 OUTPUT (V) Figure 4. X-Axis Zero g Bias Deviation from Ideal at 25° ...

Page 8

ADXL320 1.54 1.53 1.52 1.51 1.50 1.49 1.48 1.47 1.46 –30 –20 – TEMPERATURE (°C) Figure 10. Zero g Bias vs. Temperature—Parts Soldered to PCB 170 190 210 ...

Page 9

SELF-TEST (mV) Figure 16. X-Axis Self-Test Response at 25° 420 430 440 450 460 470 480 490 ...

Page 10

ADXL320 X = 1.500V OUT Y = 1.674V OUT 1.326V OUT 320J #1234 Y = 1.500V OUT 5678P X = 1.500V OUT Y = 1.326V OUT 5678P X = 1.674V OUT #1234 320J Y = 1.50V OUT ...

Page 11

THEORY OF OPERATION The ADXL320 is a complete acceleration measurement system on a single monolithic IC. The ADXL320 has a measurement range of ± contains a polysilicon surface-micromachined sensor and signal conditioning circuitry to implement an open- loop ...

Page 12

ADXL320 APPLICATIONS POWER SUPPLY DECOUPLING For most applications, a single 0.1 μF capacitor, C decouples the accelerometer from noise on the power supply. However, in some cases, particularly where noise is present at the 140 kHz internal clock frequency (or ...

Page 13

Peak-to-peak noise values give the best estimate of the uncertainty in a single measurement. Table 7 gives the typical noise output of the ADXL320 for various C Table 7. Filter Capacitor Selection (C X Bandwidth RMS Noise ...

Page 14

... PIN 1 INDICATOR 1.50 1.45 1.40 ORDERING GUIDE Measurement Model Range 1 ADXL320JCP ± ADXL320JCP–REEL ± ADXL320JCP–REEL7 ±5 g ADXL320EB 1 Lead finish—Matte tin. 0.20 MIN 12 4.15 TOP 4.00 SQ VIEW 3.85 0.65 BSC 9 0.55 0.50 0.45 0.05 MAX 0.02 NOM 0.35 COPLANARITY ...

Page 15

NOTES Rev Page ADXL320 ...

Page 16

ADXL320 NOTES © 2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04993–0–6/07(0) Rev Page ...

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