Número de pieza
ADCMXL3021
componentes Descripción
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50 Pages
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Analog Devices
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GENERAL DESCRIPTION
The ADcmXL3021 is a complete vibration sensing system that combines high performance vibration sensing (using microelectromechanical systems (MEMS) accelerometers) with a variety of signal processing functions to simplify the development of smart sensor nodes in condition-based monitoring (CBM) systems. The typical ultralow noise density (26 μg/√Hz) in the MEMS accelerometers supports excellent resolution. The wide bandwidth (dc to 10 kHz within 3 dB flatness) enables tracking of key vibration signatures on many machine platforms.
FEATURES
Triaxial, digital output MEMS vibration sensing module
±50 g measurement range
Ultralow output noise density, 26 μg/√Hz (MTC mode)
Wide bandwidth: dc to 10 kHz within 3 dB flatness (RTS mode)
Embedded fast data sampling: 220 kSPS per axis
6 digital FIR filters, 32 taps (coefficients), default options:
High-pass filter cutoff frequencies: 1 kHz, 5 kHz, 10 kHz
Low-pass filter cutoff frequencies: 1 kHz, 5 kHz, 10 kHz
User configurable digital filter option (32 coefficients)
Spectral analysis through internal FFT
Extended record length: 2048 bins per axis with user
configurable bin sizes from 0.42 Hz to 53.7 Hz
Manual or timer-based (automatic) triggering
Windowing options: rectangular, Hanning, flat top
FFT record averaging, configurable up to 255 records
Spectral defined alarm monitoring, 6 alarms per axis
Time domain capture with statistical metrics
Extended record length: 4096 samples per axis
Mean, standard deviation, peak, crest factor, skewness,
and kurtosis
Configurable alarm monitoring
Real-time data streaming
220 kSPS on each axis by default
User programmable sample rates
Burst mode communication with CRC-16 error checking
Storage: 10 data records for each axis
On demand self test with status flags
Sleep mode with external and timer driven wakeup
Digital temperature and power supply measurements
SPI-compatible serial interface
Identification registers: factory preprogrammed serial
number, device ID, user programmable ID
Single-supply operation: 3.0 V to 3.6 V
Operating temperature range: −40°C to +105°C
Automatic shutdown at 125°C (junction temperature)
23.7 mm × 27.0 mm × 12.4 mm aluminum package
36 mm flexible, 14-pin connector interface
Mass: 13 g
APPLICATIONS
Vibration analysis
CBM systems
Machine health
Instrumentation and diagnostics
Safety shutoff sensing
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