ADXL321JCP Analog Devices Inc, ADXL321JCP Datasheet

IC, 2AXIS ACCELEROMETER, ± 18G, LFCSP-16

ADXL321JCP

Manufacturer Part Number
ADXL321JCP
Description
IC, 2AXIS ACCELEROMETER, ± 18G, LFCSP-16
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADXL321JCP

No. Of Axes
2
Sensor Case Style
LFCSP
No. Of Pins
16
Supply Voltage Range
2.4V To 6V
Operating Temperature Range
-20°C To +70°C
Msl
MSL 1 - Unlimited
Acceleration Range
± 18g
Axis
X, Y
Sensitivity
57mV/g
Voltage - Supply
2.4 V ~ 6 V
Output Type
Analog
Bandwidth
1Hz ~ 500Hz Selectable
Mounting Type
Surface Mount
Package / Case
16-LQFN, CSP Exposed Pad
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
ADXL321EB - EVAL BOARD FOR ADXL321
Interface
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADXL321JCP
Quantity:
470
Part Number:
ADXL321JCPZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADXL321JCPZ-REEL7
Manufacturer:
MOT
Quantity:
336
FEATURES
Small and thin
3 mg resolution at 50 Hz
Wide supply voltage range: 2.4 V to 6 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
Vibration monitoring and compensation
Abuse event detection
Sports equipment
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
S
= 2.4 V (typ)
C
DC
+3V
SENSOR
V
COM
S
FUNCTIONAL BLOCK DIAGRAM
ADXL321
AMP
AC
Small and Thin ±18 g Accelerometer
ST
Figure 1.
DEMOD
GENERAL DESCRIPTION
The ADXL321 is a small and thin, 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 ±18 g (typical). It can also
measure both dynamic acceleration (vibration) and static
acceleration (gravity).
The ADXL321’s typical noise floor is 320 μg/√Hz, allowing
signals below 3 mg to be resolved in tilt-sensing applications
using narrow bandwidths (<50 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 ADXL321 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
X
and C
Y OUT
C
Y
R
32kΩ
Y
FILT
© 2007 Analog Devices, Inc. All rights reserved.
at the X
OUTPUT
AMP
X OUT
C
X
OUT
and Y
OUT
pins. Bandwidths of
ADXL321
www.analog.com

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ADXL321JCP Summary of contents

Page 1

FEATURES Small and thin 4 mm × × 1.45 mm LFCSP package 3 mg resolution Wide supply voltage range: 2 Low power: 350 μ 2.4 V (typ) S ...

Page 2

ADXL321 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

ADXL321 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 11, 13 COM 10 Y OUT 12 X OUT 14 ...

Page 6

ADXL321 Table 4. Recommended Soldering Profile Profile Feature Average Ramp Rate ( Preheat Minimum Temperature (T ) SMIN Minimum 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 VOLTS Figure 4. X-Axis Zero g Bias at 25° –10 –8 –6 –4 ...

Page 8

ADXL321 1.600 1.575 1.550 1.525 1.500 1.475 1.450 1.425 1.400 –30 –20 – TEMPERATURE (°C) Figure 10. Zero g Bias vs. Temperature—Parts Soldered to PCB 200 220 240 260 ...

Page 9

Figure 16. X-Axis Self-Test Response at 25° 420 430 440 450 460 ...

Page 10

ADXL321 X = 1.500V OUT Y = 1.557V OUT 1.443V OUT 321J #1234 Y = 1.500V OUT 5678P X = 1.500V OUT Y = 1.443V OUT 5678P X = 1.557V OUT #1234 321J Y = 1.50V OUT ...

Page 11

THEORY OF OPERATION The ADXL321 is a complete acceleration measurement system on a single monolithic IC. The ADXL321 has a measurement range of ± contains a polysilicon surface-micromachined sensor and signal conditioning circuitry to implement an open- loop ...

Page 12

ADXL321 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

... PITCH = arcsine the S ROLL = arcsine(A Be sure to account for overranges possible for the accelerometers to output a signal greater than ±1 g due to vibration, shock, or other accelerations the noise S = 2.4 V, the noise S Rev Page ...

Page 14

... ADXL321 OUTLINE DIMENSIONS PIN 1 INDICATOR 1.50 1.45 1.40 ORDERING GUIDE Measurement Model Range 1 ADXL321JCP ±18 g ADXL321JCP–REEL ±18 g ADXL321EB 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 ADXL321 ...

Page 16

ADXL321 NOTES © 2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05291–0–6/07(0) Rev Page ...

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