Digital Triaxial Vibration Sensor with FFT Analysis and Storage Data Sheet ADIS16227 FEATURES GENERAL DESCRIPTION Frequency domain triaxial vibration sensor The ADIS16227 iSensor is a complete vibration sensing system Digital acceleration data, 70 g measurement range that combines wide bandwidth, triaxial acceleration sensing with Digital range settings: 1 g, 5 g, 20 g, 70 g advanced time domain and frequency domain signal processing. Sample rate: 100.2 kHz, 4 decimation filter settings Time domain signal processing includes a programmable decimation FFT, 512 point, real valued, all three axes (x, y, z) filter and selectable windowing function. Frequency domain Windowing options: rectangular, Hanning, flat top processing includes a 512 point, real-valued FFT for each axis, Programmable FFT averaging, up to 256 averages along with FFT averaging, which reduces the noise floor variation Storage, 16 FFT records on all three axes (x, y, z) for finer resolution. The 16-record FFT storage system offers Programmable alarms, 6 spectral bands users the ability to track changes over time and to capture FFTs 2-level settings for warning and fault definition with multiple decimation filter settings. Adjustable response delay to reduce false alarms The 22 kHz sensor resonance and 100.2 kSPS sample rate Trigger modes: SPI command, timer, external trigger provide a frequency response that is suitable for machine-health Multirecord capture for selected filter settings applications. The aluminum core provides excellent mechanical Manual capture mode for time-domain data collection coupling to the MEMS acceleration sensors. An internal clock Internal self-test with status flags drives the data sampling and signal processing system during all Digital temperature and power supply measurements operations, which eliminates the need for an external clock 2 auxiliary digital I/Os source. The data capture function has three modes that offer SPI-compatible serial interface several options to meet the needs of many different applica- Serial number and device ID tions. Single-supply operation: 3.15 V to 3.6 V The SPI and data buffer structure provide convenient access Operating temperature range: 40C to +125C to wide bandwidth sensor data. The ADIS16227 also offers a 15 mm 15 mm 15 mm aluminum package, flex connector digital temperature sensor and digital power supply measure- APPLICATIONS ments. Vibration analysis The ADIS16227 is available in a 15 mm 15 mm 15 mm module Condition monitoring with a threaded hole for stud mounting with a 10-32 UNF screw. Machine health The dual-row, 1 mm, 14-pin, flexible connector enables simple Instrumentation, diagnostics user interface and installation. The ADIS16227 is footprint and Safety shutoff sensing pin-for-pin compatible with the ADIS16223. It has an extended operating temperature range of 40C to +125C. FUNCTIONAL BLOCK DIAGRAM DIO1 DIO2 RST VDD INPUT/ POWER ALARMS GND ADIS16227 OUTPUT MANAGEMENT CS TRIAXIAL CONTROL CONTROLLER MEMS REGISTERS SENSOR SCLK SPI PORT DIN TEMP SENSOR FILTER OUTPUT CAPTURE RECORD ADC DOUT WINDOW REGISTERS BUFFER STORAGE FFT SUPPLY Figure 1. Rev. B 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 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20102012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. OBSOLETE 09425-001ADIS16227 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Spectral Alarms ............................................................................... 13 Applications ....................................................................................... 1 Alarm Definition ........................................................................ 13 General Description ......................................................................... 1 Alarm Indicator Signals ............................................................. 14 Functional Block Diagram .............................................................. 1 Alarm Flags and Conditions ..................................................... 15 Revision History ............................................................................... 2 Alarm Status ................................................................................ 15 Specifications ..................................................................................... 3 Worst-Condition Monitoring ................................................... 15 Timing Specifications .................................................................. 4 Reading Output Data ..................................................................... 16 Absolute Maximum Ratings ............................................................ 5 Reading Data from the Data Buffer ......................................... 16 ESD Caution .................................................................................. 5 Accessing FFT Record Data ...................................................... 16 Pin Configuration and Function Descriptions ............................. 6 Data Format ................................................................................ 16 Theory of Operation ........................................................................ 7 Power Supply/Temperature ....................................................... 17 Sensing Element ........................................................................... 7 FFT Event Header ...................................................................... 17 Signal Processing .......................................................................... 7 System Tools .................................................................................... 18 User Interface ................................................................................ 7 Global Commands ..................................................................... 18 Basic Operation ................................................................................. 8 Status/Error Flags ....................................................................... 18 SPI Write Commands .................................................................. 8 Operation Managment .............................................................. 18 SPI Read Commands ................................................................... 8 Input/Output Functions ............................................................ 19 Data Recording and Signal Processing ........................................ 10 Self-Test ....................................................................................... 19 Recording Modes ........................................................................ 10 Flash Memory Management ..................................................... 20 Recording Times ......................................................................... 10 Device Identification .................................................................. 20 Power-Down ............................................................................... 11 Applications Information .............................................................. 21 Record Storage Mode ................................................................. 11 Mounting Guidelines ................................................................. 21 Sample Rate Options .................................................................. 11 Getting Started ............................................................................ 21 Windowing Options ................................................................... 11 Interface Board ........................................................................... 21 Range ............................................................................................ 12 Outline Dimensions ....................................................................... 22 Offset Correction ........................................................................ 12 Ordering Guide .......................................................................... 22 FFT Averaging ............................................................................ 12 FFT Record Flash Endurance ................................................... 12 REVISION HISTORY 5/12Rev. A to Rev. B Changes to Alarm Trigger Settings Section, Enable Alarm Changes to Table 10 ........................................................................ 10 Settings Section, Table 27, Table 28, Table 30, and Table 31 ............................................................................................ 14 2/12Rev. 0 to Rev. A Change to Alarm Indicator Section ............................................. 19 Changes to Dual Memory Structure Section ................................ 7 Change to Table 14 ......................................................................... 11 10/10Revision 0: Initial Version Rev. B Page 2 of 24 OBSOLETE