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ADXL103CEADN/a100avaiHigh Precision, ±1.5g, Single Axis Accelerometer
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ADXL103CE-ADXL103CE-REEL-ADXL203CE-ADXL203CE-REEL-ADXL203EB
High Precision, ±1.5g, Single Axis Accelerometer
Precision ±1.7 g
Single/Dual Axis Accelerometer

Rev. 0
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
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
GENERAL 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 μg/√Hz, allowing signals below
1 mg (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 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.
The ADXL103 and ADXL203 are available in 5 mm × 5 mm ×
2 mm, 8-pad hermetic LCC packages.
FUNCTIONAL BLOCK DIAGRAM

+5VSTXOUT
CDC
+5VST
CDC
Figure 1. ADXL103/ADXL203 Functional Block Diagram
TABLE OF CONTENTS
Specifications.....................................................................................3
Absolute Maximum Ratings............................................................4
Typical Performance Characteristics.............................................5
Theory of Operation........................................................................8
Performance..................................................................................8
Applications.......................................................................................9
Power Supply Decoupling...........................................................9
Setting the Bandwidth Using CX and CY....................................9
Self Test...........................................................................................9
Design Trade-Offs for Selecting Filter Characteristics: The
Noise/BW Trade-Off.....................................................................9
Using the ADXL103/ADXL203 with Operating Voltages
Other than 5 V............................................................................10
Using the ADXL203 as a Dual-Axis Tilt Sensor....................10
Pin Configurations and Functional Descriptions......................11
Outline Dimensions.......................................................................12
Ordering Guide..........................................................................12
REVISION HISTORY

Revision 0: Initial Version
SPECIFICATIONS
Table 1. TA = –40°C to +125°C, VS = 5 V, CX = CY = 0.1 μF, Acceleration = 0 g, unless otherwise noted.

Guaranteed by measurement of initial offset and sensitivity.
2 Sensitivity is essentially ratiometric to VS. For VS = 4.75 V to 5.25 V, sensitivity is 186 mV/V/g to 215 mV/V/g. Defined as the output change from ambient-to-maximum temperature or ambient-to-minimum temperature.
4 Actual frequency response controlled by user-supplied external capacitor (CX, CY). Bandwidth = 1/(2 × π × 32 kΩ × C). For CX, CY = 0.002 µF, Bandwidth = 2500 Hz. For CX, CY = 10 µF, Bandwidth = 0.5 Hz. Minimum/maximum values are not tested.
6 Self-test response changes cubically with VS. Larger values of CX, CY will increase turn-on time. Turn-on time is approximately 160 × CX or CY + 4 ms, where CX, CY are in µF.
All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed.
ABSOLUTE MAXIMUM RATINGS
Table 2. ADXL103/ADXL203 Stress Ratings

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.
Table 3. Package Characteristics

t25°C TO PEAK
CRITICAL ZONE
RATURE
TIME
Figure 2. Recommended Soldering Profile
TYPICAL PERFORMANCE CHARACTERISTICS
(VS = 5 V for all graphs, unless otherwise noted.)
PER
OF POPU
TION

VOLTS
0.020.040.060.080.10
Figure 3. X Axis Zero g Bias Deviation from Ideal at 25°C
PER
OF POPU
TION

mg/°C
0.100.200.300.400.500.600.700.80
Figure 4. X Axis Zero g Bias Tempco
PER
OF POPU
TION

VOLTS/g
0.980.991.001.011.021.031.041.051.06
Figure 5. X Axis Sensitivity at 25°C
PER
OF POPU
TION

VOLTS
0.020.040.060.080.10
Figure 6. Y Axis Zero g Bias Deviation from Ideal at 25°C
PER
OF POPU
TION

mg/°C
0.100.200.300.400.500.600.700.80
Figure 7. Y Axis Zero g Bias Tempco
PER
OF POPU
TION

VOLTS/g
0.980.991.001.011.021.031.041.051.06
Figure 8. Y Axis Sensitivity at 25°C
TEMPERATURE (°C)
VOLTA
GE (
100110120130

Figure 9. Zero g Bias vs. Temperature – Parts Soldered to PCB
X AXIS NOISE DENSITY (µg/√Hz)
PER
OF POPU
TION

15014013012011010090807060
Figure 10. X Axis Noise Density at 25°C
PERCENT SENSITIVITY (%)
PER
OF POPU
TION
1.02.03.04.05.0

Figure 11. Z vs. X Cross-Axis Sensitivity
TEMPERATURE (°C)
SEN
SITIVITY (
100110120130

Figure 12. Sensitivity vs. Temperature – Parts Soldered to PCB
X AXIS NOISE DENSITY (µg/√Hz)
PER
OF POPU
TION

15014013012011010090807060
Figure 13. Y Axis Noise Density at 25°C
PERCENT SENSITIVITY (%)
PER
OF POPU
TION
1.02.03.04.05.0

Figure 14. Z vs. Y Cross-Axis Sensitivity
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