ADXL103 Datasheet, PDF (1/12 Pages) Analog Devices – Precision ±1.7 g Single/Dual Axis Accelerometer

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
Precision ±1.7 g
Single/Dual Axis Accelerometer
ADXL103/ADXL203
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
+5V
+5V
V_S
ADXL103
V_S
ADXL203
C_DC
SENSOR
COM
AC
AMP
DEMOD
OUTPUT
AMP
R_FILT
32kΩ
ST
X_OUT
C_X
C_DC
SENSOR
COM
AC
AMP
DEMOD
OUTPUT
AMP
OUTPUT
AMP
R_FILT
32kΩ
R_FILT
32kΩ
ST
Y_OUT
X_OUT
C_Y
C_X
Figure 1. ADXL103/ADXL203 Functional Block Diagram
Rev. 0
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