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Part Number ADXL330

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Small, Low Power, 3-Axis ±2 g
i
MEMS
®
Accelerometer
Preliminary Technical Data
ADXL330
Rev. PrA
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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.


One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
FEATURES
3-axis sensing
Small, low-profile package
4 mm × 4 mm × 1.45 mm LFCSP
Low power
200 A at V
S
= 2.0 V (typ)
Single-supply operation
2.0 V to 3.6 V
10,000 g shock survival
Good zero g bias stability
Good sensitivity accuracy
BW adjustment with a single capacitor
RoHS/WEEE lead-free compliant
APPLICATIONS
Cost-sensitive motion- and tilt-sensing applications
Cellular handsets
Gaming devices
Disk drive protection
Image stabilization
Sports and health devices
GENERAL DESCRIPTION
The ADXL330 is a small, low power complete three axis
accelerometer with signal conditioned voltage outputs, all
on a single monolithic IC. The product measures acceleration
with a minimum full-scale range of ±2 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
capacitors C
X
, C
Y
, C
Z
and at the X
OUT
, Y
OUT
, and Z
OUT
pins.
Bandwidths may be selected to suit the application, with a
range of 0.5 Hz to 1,600 Hz for X and Y axes, and a range of
0.5 Hz to 550 Hz for the Z axis.
The ADXL330 is available in a small, low-profile, 4 mm × 4 mm
× 1.45 mm, 16-lead, plastic lead frame chip scale package
(LFCSP).
FUNCTIONAL BLOCK DIAGRAM
05677-001
3-AXIS
SENSOR
AC AMP
DEMOD
OUTPUT AMP
OUTPUT AMP
OUTPUT AMP
V
S
COM
ST
X
OUT
Y
OUT
Z
OUT
+3V
C
X
C
Y
C
Z
ADXL330
R
FILT
R
FILT
R
FILT
C
DC
Figure 1.
ADXL330
Preliminary Technical Data
Rev. PrA | Page 2 of 8
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..............................5
Axes of Acceleration Sensitivity ......................................................6
Outline Dimensions ..........................................................................7
Ordering Guide .............................................................................7
REVISION HISTORY
10/05--Revision PrA: Preliminary Version
Preliminary Technical Data
ADXL330
Rev. PrA | Page 3 of 8
SPECIFICATIONS
T
A
= 25°C, V
S
= 3 V, C
X
= C
Y
= C
Z
= 0.1 F, acceleration = 0 g, unless otherwise noted. All minimum and maximum specifications are
guaranteed. Typical specifications are not guaranteed.
Table 1.
Parameter Conditions
Min
Typ
Max
Unit
SENSOR INPUT
Each axis
Measurement Range
±2
±4
g
Nonlinearity
% of full scale
±0.3
%
Inter-Axis Alignment Error
±0.1
Degrees
Cross Axis Sensitivity
1
±1
%
SENSITIVITY (RATIOMETRIC)
2
Each axis
Sensitivity at X
OUT
, Y
OUT
, Z
OUT
V
S
= 3 V
270
300
330
mV/g
Sensitivity Change Due to Temperature
3
V
S
= 3 V
±0.01
%/°C
ZERO g BIAS LEVEL (RATIOMETRIC)
Each axis
0 g Voltage at X
OUT
, Y
OUT
, Z
OUT
V
S
= 3 V
1.2
1.5
1.8
V
0 g Offset vs. Temperature
±1
mg/°C
NOISE PERFORMANCE
Noise Density X
OUT
, Y
OUT
170
g/Hz rms
Noise Density Z
OUT
350
g/Hz rms
FREQUENCY RESPONSE
4
Bandwidth X
OUT
, Y
OUT
T
5
No external filter
1600
Hz
Bandwidth Z
OUT
No external filter
550
Hz
R
FILT
Tolerance
32 ± 15%
k
Sensor Resonant Frequency
5.5
kHz
SELF-TEST
6
Logic Input Low
+0.6
V
Logic Input High
+2.4
V
Output Change at X
OUT
Self-test 0 to 1
-130
mV
Output Change at Y
OUT
Self-test 0 to 1
+130
mV
Output Change at Z
OUT
Self-test 0 to 1
-70
mV
OUTPUT AMPLIFIER
Output Swing Low
No load
0.1
V
Output Swing High
No load
2.8
V
POWER SUPPLY
Operating Voltage Range
2.0
3.6
V
Quiescent Supply Current
320
µ
A
Turn-On Time
7
No external filter
1
ms
TEMPERATURE
Operating Temperature Range
-25
70
°C
1
Defined as coupling between any two axes.
2
Sensitivity is essentially ratiometric to V
S
. For V
S
= 2.7 V to 3.3 V, sensitivity is TBD mV/V/g to TBD mV/V/g typical.
3
Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature.
4
Actual frequency response controlled by user-supplied external filter capacitors (C
X
, C
Y
, C
Z
).
5
Bandwidth with external capacitors = 1/(2 × × 32 k × C). For C
X
, C
Y
, C
Z
= 0.003 F, bandwidth = 1.6 kHz. For C
X
, C
Y
, C
Z
= 10 F, bandwidth = 0.5 Hz.
6
Self-test response changes cubically with V
S
.
7
Turn-on time is dependent on C
X
, C
Y
, C
Z
and is approximately 160 × C
X
or C
Y
or C
Z
+ 1 ms, where C
X
, C
Y
, C
Z
are in F.
ADXL330
Preliminary Technical Data
Rev. PrA | Page 4 of 8
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Rating
Acceleration (Any Axis, Unpowered)
10,000 g
Acceleration (Any Axis, Powered)
10,000 g
V
S
-0.3 V to +7.0 V
All Other Pins
(COM - 0.3 V) to (V
S
+ 0.3 V)
Output Short-Circuit Duration
(Any Pin to Common)
Indefinite
Temperature Range (Powered)
-55°C to +125°C
Temperature Range (Storage)
-65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Preliminary Technical Data
ADXL330
Rev. PrA | Page 5 of 8
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC
ST
COM
NC
COM
COM
COM
Z
OUT
NC
V
S
V
S
NC
X
OUT
NC
Y
OUT
NC
1
2
3
4
5
6
7
8
+y
+x
+z
12
11
10
9
16 15 14 13
ADXL330
TOP VIEW
(Not to Scale)
NC
ST
COM
NC
COM
COM
COM
Z
OUT
NC
V
S
V
S
NC
X
OUT
NC
Y
OUT
NC
1
2
3
4
5
6
7
8
+y
+x
+z
+y
+x
+z
12
11
10
9
16 15 14 13
ADXL330
TOP VIEW
(Not to Scale)
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
NC
No Connect
2 ST
Self-Test
3 COM
Common
4 NC
No
Connect
5 COM
Common
6 COM
Common
7 COM
Common
8 Z
OUT
Z Channel Output
9 NC
No
Connect
10 Y
OUT
Y Channel Output
11 NC
No
Connect
12 X
OUT
X Channel Output
13 NC
No
Connect
14 V
S
Supply Voltage (2.0 V to 3.6 V)
15 V
S
Supply Voltage (2.0 V to 3.6 V)
16 NC
No
Connect
ADXL330
Preliminary Technical Data
Rev. PrA | Page 6 of 8
AXES OF ACCELERATION SENSITIVITY
A
X
A
Y
A
Z
Figure 3. Axes of Acceleration Sensitivity
(Corresponding Output Voltage Increases When Accelerated Along the Sensitive Axis)
X
OUT
= -1 g
Y
OUT
= 0 g
Z
OUT
= 0 g
X
OUT
= 0 g
Y
OUT
= -1 g
Z
OUT
= 0 g
X
OUT
= 0 g
Y
OUT
= 1 g
Z
OUT
= 0 g
X
OUT
= 1 g
Y
OUT
= 0 g
Z
OUT
= 0 g
X
OUT
= 0 g
Y
OUT
= 0 g
Z
OUT
= 1 g
X
OUT
= 0 g
Y
OUT
= 0 g
Z
OUT
= -1 g
Top
Top
Top
Top
Figure 4. Output Response vs. Orientation to Gravity
Preliminary Technical Data
ADXL330
Rev. PrA | Page 7 of 8
OUTLINE DIMENSIONS
16
5
13
8
9
12
1
4
0.65 BSC
2.43
1.75 SQ
1.08
1.95 BSC
0.20 MIN
PIN 1
INDICATOR
BOTTOM
VIEW
0.20 MIN
SEATING
PLANE
1.50
1.45
1.40
PIN 1
INDICATOR
TOP
VIEW
COPLANARITY
0.05
0.05 MAX
0.02 NOM
0.35
0.30
0.25
0.55
0.50
0.45
4.15
4.00 SQ
3.85
Figure 5. 16-Lead Lead Frame Chip Scale Package [LFCSP]
4 mm × 4 mm Body
(CP-16-5)
Dimensions shown in millimeters
(Drawing Not to Scale)
ORDERING GUIDE
Model Measurement
Range
Specified
Voltage
(V)
Temperature Range
Package Description
Package Option
ADXL330KCPZ
1
±2 g
3
-25°C to +70°C
16-Lead LFCSP
CP-16-5
ADXL330KCPZ­RL
±2 g
3
-25°C to +70°C
16-Lead LFCSP
CP-16-5
EVAL-ADXL330
Evaluation Board
1
Lead finish--matte tin.
ADXL330
Preliminary Technical Data
Rev. PrA | Page 8 of 8
NOTES
© 2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05677-0-10/05(PrA)