Precision ±1.7 g, ±5 g, ±18 g Single-/
Dual-Axis iMEMS® Accelerometer
ADXL103/ADXL203
Data Sheet
FEATURES
GENERAL DESCRIPTION
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)
Bandwidth adjustment with a single capacitor
Single-supply operation
3500 g shock survival
RoHS compliant
Compatible with Sn/Pb- and Pb-free solder processes
Qualified for automotive applications
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 measure acceleration with a full-scale range of ±1.7 g,
±5 g, or ±18 g. The ADXL103/ADXL203 can measure both
dynamic acceleration (for example, vibration) and static
acceleration (for example, 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
Capacitor CX and Capacitor CY at the XOUT and YOUT pins.
Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the
application.
The ADXL103 and ADXL203 are available in a 5 mm × 5 mm ×
2 mm, 8-terminal ceramic LCC package.
APPLICATIONS
Vehicle dynamic controls
Electronic chassis controls
Platform stabilization/leveling
Navigation
Alarms and motion detectors
High accuracy, 2-axis tilt sensing
Vibration monitoring and compensation
Abuse event detection
FUNCTIONAL BLOCK DIAGRAMS
+5V
+5V
VS
VS
ADXL203
ADXL103
AC
AMP
DEMOD
OUTPUT
AMP
CDC
SENSOR
AC
AMP
OUTPUT
AMP
OUTPUT
AMP
SENSOR
RFILT
32kΩ
COM
DEMOD
ST
RFILT
32kΩ
XOUT
RFILT
32kΩ
ST
YOUT
XOUT
CY
COM
CX
CX
03757-001
CDC
Figure 1.
Rev. D
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