Data Sheet
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 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)
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
Precision ±1.7
g,
±5
g,
±18
g
Single-/
Dual-Axis
iMEMS
®
Accelerometer
GENERAL DESCRIPTION
The
are high precision, low power, complete
single- and dual-axis accelerometers with signal conditioned
voltage outputs, all on a single, monolithic IC. The
measure acceleration with a full-scale range of ±1.7
g,
±5
g,
or ±18
g.
The
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 C
X
and Capacitor C
Y
at the X
OUT
and Y
OUT
pins.
Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the
application.
The
and
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
V
S
+5V
V
S
ADXL103
C
DC
SENSOR
R
FILT
32kΩ
COM
ST
X
OUT
C
X
COM
AC
AMP
OUTPUT
AMP
C
DC
ADXL203
AC
AMP
SENSOR
R
FILT
32kΩ
ST
R
FILT
32kΩ
03757-001
DEMOD
DEMOD
OUTPUT
AMP
OUTPUT
AMP
Y
OUT
C
Y
X
OUT
C
X
Figure 1.
Rev. D
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