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ADXL210

Analog Devices
Part Number ADXL210
Manufacturer Analog Devices
Description Low Cost +-2 g/+-10 g Dual Axis iMEMS Accelerometers with Digital Output
Published Mar 23, 2005
Detailed Description a FEATURES 2-Axis Acceleration Sensor on a Single IC Chip Measures Static Acceleration as Well as Dynamic Acceleration D...
Datasheet PDF File ADXL210 PDF File

ADXL210
ADXL210

Overview
a FEATURES 2-Axis Acceleration Sensor on a Single IC Chip Measures Static Acceleration as Well as Dynamic Acceleration Duty Cycle Output with User Adjustable Period Low Power <0.
6 mA Faster Response than Electrolytic, Mercury or Thermal Tilt Sensors Bandwidth Adjustment with a Single Capacitor Per Axis 5 m g Resolution at 60 Hz Bandwidth +3 V to +5.
25 V Single Supply Operation 1000 g Shock Survival APPLICATIONS 2-Axis Tilt Sensing Computer Peripherals Inertial Navigation Seismic Monitoring Vehicle Security Systems Battery Powered Motion Sensing Low Cost ؎2 g/؎10 g Dual Axis iMEMS® Accelerometers with Digital Output ADXL202/ADXL210 GENERAL DESCRIPTION The ADXL202/ADXL210 are low cost, low power, complete 2-axis accelerometers with a measurement range of either ± 2 g/ ± 10 g.
The ADXL202/ADXL210 can measure both dynamic acceleration (e.
g.
, vibration) and static acceleration (e.
g.
, gravity).
The outputs are digital signals whose duty cycles (ratio of pulsewidth to period) are proportional to the acceleration in each of the 2 sensitive axes.
These outputs may be measured directly with a microprocessor counter, requiring no A/D converter or glue logic.
The output period is adjustable from 0.
5 ms to 10 ms via a single resistor (RSET ).
If a voltage output is desired, a voltage output proportional to acceleration is available from the XFILT and YFILT pins, or may be reconstructed by filtering the duty cycle outputs.
The bandwidth of the ADXL202/ADXL210 may be set from 0.
01 Hz to 5 kHz via capacitors CX and C Y.
The typical noise floor is 500 µg/√Hz allowing signals below 5 mg to be resolved for bandwidths below 60 Hz.
The ADXL202/ADXL210 is available in a hermetic 14-lead Surface Mount CERPAK, specified over the 0°C to +70°C commercial or –40° C to +85° C industrial temperature range.
FUNCTIONAL BLOCK DIAGRAM +3.
0V TO +5.
25V CX VDD VDD XFILT SELF TEST X SENSOR CDC DEMOD RFILT 32k⍀ ADXL202/ ADXL210 X OUT DUTY CYCLE MODULATOR (DCM) C O U N T E R OSCILLATOR RFILT 32k⍀ ...


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