Wide Bandwidth, Low Noise, Vibration Sensor Data Sheet ADcmXL1021-1 FEATURES FUNCTIONAL BLOCK DIAGRAM VDD GND Single axis, digital output MEMS vibration sensing module 50 g measurement range OUT VDDM POWER MANAGEMENT Ultralow output noise density, 26 g/Hz (MTC mode) Wide bandwidth: dc to 10 kHz within 3 dB flatness (RTS mode) RST Embedded fast data conversion rate: 220 kSPS CS 6 digital FIR filters, 32 taps (coefficients), default options SCLK DIN High-pass filter cutoff frequencies: 1 kHz, 5 kHz, 10 kHz MEMS ADC ACCELEROMETER DOUT Low-pass filter cutoff frequencies: 1 kHz, 5 kHz, 10 kHz SYNC/RTS User configurable digital filter option (32 coefficients) BUSY Spectral analysis through internal FFT ALM1 ALM2 Extended record length: 2048 bins with user configurable ADcmXL1021-1 bin sizes from 0.42 Hz to 53.7 Hz Manual or timer-based (automatic) triggering Figure 1. Windowing options: rectangular, Hanning, flat top GENERAL DESCRIPTION FFT record averaging, configurable up to 255 records The ADcmXL1021-1 is a complete vibration sensing system that Spectral defined alarm monitoring, 6 alarms combines high performance vibration sensing (using a micro- Time domain capture with statistical metrics electromechanical systems (MEMS) accelerometer) with a variety Extended record length: 4096 samples of signal processing functions to simplify the development of Mean, standard deviation, peak, crest factor, skewness, smart sensor nodes in condition-based monitoring (CBM) and Kurtosis systems. The typical ultralow noise density (26 g/Hz) in the Configurable alarm monitoring MEMS accelerometers supports excellent resolution. The wide Real-time data streaming at 220 kSPS bandwidth (dc to 10 kHz within 3 dB flatness) enables tracking Burst mode communication with CRC-16 error checking of key vibration signatures on many machine platforms. Storage: 10 data records On demand self test with status flags The signal processing includes high speed data sampling Sleep mode with external and timer driven wakeup (220 kSPS), 4096 time sample record lengths, filtering, Digital temperature and power supply measurements windowing, fast Fourier transform (FFT), user configurable SPI-compatible serial interface spectral or time statistic alarms, and error flags. The serial Identification registers: factory preprogrammed serial peripheral interface (SPI) provides access to a register structure number, device ID, user programmable ID that contains the vibration data and a wide range of user Single-supply operation: 3.0 V to 3.6 V configurable functions. Operating temperature range: 40C to +105C The ADcmXL1021-1 is available in a 23.7 mm 27.0 mm Automatic shutdown at 125C (junction temperature) 12.4 mm aluminum package with four mounting flanges to 23.7 mm 27.0 mm 12.4 mm aluminum package support installation with standard machine screws. This light 36 mm flexible, 14-lead module with integrated flexible weight package (13 g) provides consistent mechanical coupling connector to the core sensors over a broad frequency range. The electrical Mass: 13 g interface is through a 14-lead connector on a 36 mm flexible cable, which enables a wide range of location and orientation APPLICATIONS options for system mating connectors. Vibration analysis Condition-based monitoring (CbM) systems The ADcmXL1021-1 requires only a single, 3.3 V power supply Machine health and supports an operating temperature range of 40C to +105C. Instrumentation and diagnostics Multifunction pin names may be referenced by their relevant Safety shutoff sensing function only. Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com EMBEDDED PROCESSING INTERFACE 21125-001ADcmXL1021-1 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 REC CTRL, Recording Control .............................................. 31 Applications ....................................................................................... 1 REC PRD, Record Period ......................................................... 32 Functional Block Diagram .............................................................. 1 ALM F LOW, Alarm Frequency Band .................................. 33 General Description ......................................................................... 1 ALM F HIGH, Alarm Frequency Band ................................ 33 Revision History ............................................................................... 2 ALM MAG1, Alarm Level 1 .................................................... 33 Specifications ..................................................................................... 3 ALM MAG2, Alarm Level 2 .................................................... 33 Timing Specifications .................................................................. 4 ALM PNTR, Alarm Pointer ..................................................... 34 Absolute Maximum Ratings ............................................................ 6 ALM S MAG Alarm Level ...................................................... 34 Thermal Resistance ...................................................................... 6 ALM CTRL, Alarm Conrol ..................................................... 34 ESD Caution .................................................................................. 6 FILT CTRL, Filter Control ....................................................... 34 Pin Configuration and Function Descriptions ............................. 7 AVG CNT, Decimation Control .............................................. 35 Typical Performance Characteristics ............................................. 8 DIAG STAT, Status, and Error Flags ....................................... 35 Theory of Operation ...................................................................... 11 GLOB CMD, Global Commands ............................................ 36 Core Sensors ................................................................................ 11 ALM STAT, Alarm Status ......................................................... 36 Signal Processsing....................................................................... 11 ALM PEAK, Alarm Peak Level ............................................... 36 Modes of Operation ................................................................... 12 TIME STAMP L and TIME STAMP H, Data Record Timestamp ................................................................................... 36 Data Recording Options ............................................................ 13 DAY REV, Day and Revision ................................................... 37 User Interface .............................................................................. 16 YEAR MON, Year and Month ................................................. 37 Basic Operation............................................................................... 19 PROD ID, Product Identification ........................................... 37 Device Configuration ................................................................ 19 SERIAL NUM, Serial Number ................................................ 37 Dual Memory Structure ............................................................ 19 USER SCRATCH ...................................................................... 37 Power-Up Sequence ................................................................... 19 REC FLASH CNT, Record Flash Endurance ....................... 37 Trigger .......................................................................................... 19 MISC CTRL, Miscellaneous Control ..................................... 37 Sample Rate ................................................................................. 20 REC INFO1, Record Information ........................................... 38 Datapath Processing ................................................................... 20 REC INFO2, Record Information, .......................................... 38 Spectral Alarms ........................................................................... 22 REC CNTR, Record Counter .................................................. 38 Mechanical Mounting Recommendations .............................. 22 ALM FREQ, Severe Alarm Frequency ................................... 38 User Register Memory Map .......................................................... 23 STAT PNTR, Statistic Result Pointer ...................................... 38 User Register Details ...................................................................... 28 STATISTIC, Statistic Result ...................................................... 39 PAGE ID, Page Number ........................................................... 28 FUND FREQ, Fundamental Frequency ................................. 39 TEMP OUT, Internal Temperature ......................................... 28 FLASH CNT L, Flash Memory Endurance ......................... 39 SUPPLY OUT, Power Supply Voltage ..................................... 28 FLASH CNT U, Flash Memory Endurance ......................... 39 FFT AVG1, Spectral Averaging ............................................... 28 FIR Filter Registers ..................................................................... 40 FFT AVG2, Spectral Averaging ............................................... 29 Applications Information .............................................................. 41 BUF PNTR, Buffer Pointer ...................................................... 29 Mechanical Interface .................................................................. 41 REC PNTR, Record Pointer ..................................................... 30 Outline Dimensions ....................................................................... 42 OUT BUF, Buffer Access Register ........................................... 30 Ordering Guide .......................................................................... 42 ANULL, Bias Calibration Register ........................................... 31 REVISION HISTORY 11/2019Revision 0: Initial Version Rev. 0 Page 2 of 42