ADXL204 Datasheet, PDF (1/12 Pages) Analog Devices – Precisionc +-1.7 g Single-/Dual-Axis i MEMS Accelerometer

Precision ±1.7 g Single-/Dual-Axis
i MEMS^® Accelerometer
ADXL204
FEATURES
High performance, dual-axis accelerometer on a
single IC chip
Specified at VS = 3.3 V
5 mm × 5 mm × 2 mm LCC package
Better than 2 mg resolution at 60 Hz
Low power: 500 μA at VS = 3.3 V (typical)
High zero g bias stability
High sensitivity accuracy
–40°C to +125°C temperature range
X-axis and Y-axis aligned to within 0.1° (typical)
BW adjustment with a single capacitor
Single-supply operation
3500 g shock survival
RoHS compliant
Compatible with Sn/Pb- and Pb-free solder processes
APPLICATIONS
Vehicle dynamic control (VDC)/electronic stability program
(ESP) systems
Electronic chassis controls
Electronic braking
Platform stabilization/leveling
Navigation
Alarms and motion detectors
High accuracy, 2-axis tilt sensing
GENERAL DESCRIPTION
The ADXL204 is a high precision, low power, complete dual-
axis accelerometer with signal-conditioned voltage outputs, all
on a single monolithic IC. Like the ADXL203, it measures
acceleration with a full-scale range of ±1.7 g; however, the
ADXL204 is tested and specified for 3.3 V supply voltage,
whereas the ADXL203 is tested and specified at 5 V. Both parts
function well over a wide 3 V to 6 V operating voltage range.
The ADXL204 can measure both dynamic acceleration (for
example, vibration) and static acceleration (for example, gravity).
The typical noise floor is 170 μg/√Hz, allowing signals below
2 mg (0.1° 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 ADXL204 is available in a 5 mm × 5 mm × 2 mm,
8-terminal hermetic LCC package.
FUNCTIONAL BLOCK DIAGRAM
+5V
V_S
ADXL204
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.
Rev. A
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