Precision ± ±1.
g
Single/Dual Axis Accelerometer
ADXL±03/ADXL203
GENERAL DESCRIPTION
FEATURES
High performance, single/dual axis accelerometer on a
single IC chip
5 mm × 5 mm × 2 mm LCC package
1 mg resolution at 60 Hz
Low power: 700 µA at VS = 5 V (typical)
High zero g bias stability
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.ꢀ g . The ADXL103/ADXL203 can measure both
dynamic acceleration (e.g., vibration) and static acceleration
(e.g., gravity).
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
The typical noise floor is 110 μg/√Hz, allowing signals below
1 mg (0.06° of inclination) to be resolved in tilt sensing
applications using narrow bandwidths (<60 Hz).
3500 g shock survival
The user selects the bandwidth of the accelerometer using
capacitors CX and CY at the XOUT and YOUT pins. Bandwidths of
0.5 Hz to 2.5 kHz may be selected to suit the application.
APPLICATIONS
Vehicle Dynamic Control (VDC)/Electronic Stability Program
The ADXL103 and ADXL203 are available in 5 mm × 5 mm ×
2 mm, 8-pad hermetic LCC packages.
(ESP) systems
Electronic chassis control
Electronic braking
Platform stabilization/leveling
Navigation
Alarms and motion detectors.
High accuracy, 2-axis tilt sensing
FUNCTIONAL BLOCK DIAGRAM
+5V
+5V
V
V
S
S
ADXL203
ADXL103
C
C
AC
AMP
OUTPUT
AMP
OUTPUT
AMP
AC
AMP
OUTPUT
AMP
DC
DC
DEMOD
DEMOD
SENSOR
COM
SENSOR
COM
R
R
R
FILT
32kΩ
FILT
32kΩ
FILT
32kΩ
ST
X
OUT
ST
Y
X
OUT
OUT
C
C
C
X
X
Y
Figure 1. ADXL103/ADXL203 Functional Block Diagram
Rev. 0
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