
Precision ±1.7
g
Single/Dual Axis Accelerometer
ADXL103/ADXL203
FEATURES
High performance, single/dual axis accelerometer on a
single IC chip
5 mm × 5 mm × 2 mm LCC package
1 m
g
resolution at 60 Hz
Low power: 700 μA at V
S
= 5 V (typical)
High zero
g
bias stability
High sensitivity accuracy
–40°C to +125°C temperature range
X and Y axes aligned to within 0.1° (typical)
BW adjustment with a single capacitor
Single-supply operation
3500
g
shock survival
APPLICATIONS
Vehicle Dynamic Control (VDC)/Electronic Stability Program
(ESP) systems
Electronic chassis control
Electronic braking
Platform stabilization/leveling
Navigation
Alarms and motion detectors.
High accuracy, 2-axis tilt sensing
Rev.
0
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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
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
www.analog.comGENERAL DESCRIPTION
The ADXL103/ADXL203 are high precision, low power,
complete single and dual axis accelerometers with signal
conditioned voltage outputs, all on a single monolithic IC. The
ADXL103/ADXL203 measures acceleration with a full-scale
range of ±1.7
g
. The ADXL103/ADXL203 can measure both
dynamic acceleration (e.g., vibration) and static acceleration
(e.g., gravity).
The typical noise floor is 110 μ
g
/√Hz, allowing signals below
1 m
g
(0.06° of inclination) to be resolved in tilt sensing
applications using narrow bandwidths (<60 Hz).
The user selects the bandwidth of the accelerometer using
capacitors C
X
and C
Y
at the X
OUT
and Y
OUT
pins. Bandwidths of
0.5 Hz to 2.5 kHz may be selected to suit the application.
The ADXL103 and ADXL203 are available in 5 mm × 5 mm ×
2 mm, 8-pad hermetic LCC packages.
FUNCTIONAL BLOCK DIAGRAM
ADXL103
0
SENSOR
+5V
OUTPUT
AMP
COM
ST
X
OUT
C
X
V
S
C
DC
R
FILT
32k
DEMOD
AC
AMP
ADXL203
SENSOR
+5V
OUTPUT
AMP
OUTPUT
AMP
COM
ST
Y
OUT
C
Y
V
S
C
DC
R
FILT
32k
DEMOD
X
OUT
C
X
R
FILT
32k
AC
AMP
Figure 1. ADXL103/ADXL203 Functional Block Diagram