Datasheet ADIS16228 (Analog Devices) - 3

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ADIS16228 Data Sheet TABLE OF CONTENTS
Features .. 1 Alarm Definition .. 18 Applications ... 1 Alarm Indicator Signals ... 19 General Description ... 1 Alarm Flags and Conditions ... 19 Functional Block Diagram .. 1 Alarm Status .. 20 Revision History ... 3 Worst-Case Condition Monitoring.. 20 Specifications ... 4 Reading Output Data ... 21 Timing Specifications .. 5 Reading Data from the Data Buffer ... 21 Absolute Maximum Ratings .. 6 Accessing FFT Record Data .. 21 ESD Caution .. 6 Data Format .. 22 Pin Configuration and Function Descriptions ... 7 Real-Time Data Collection ... 22 Theory of Operation .. 8 Power Supply/Temperature ... 22 Sensing Element ... 8 FFT Event Header .. 23 Signal Processing .. 8 System Tools .. 24 User Interface .. 8 Global Commands ... 24 Basic Operation ... 9 Status/Error Flags ... 24 SPI Write Commands .. 9 Power-Down ... 24 SPI Read Commands ... 9 Operation Managment .. 25 Data Recording and Signal Processing .. 12 Input/Output Functions .. 25 Recording Mode ... 12 Self-Test ... 26 Spectral Record Production .. 13 Flash Memory Management ... 26 Sample Rate/Filtering ... 13 Device Identification .. 26 Dynamic Range/Sensitivity ... 15 Applications Information .. 27 Pre-FFT Windowing .. 16 Interface Board ... 27 FFT ... 17 Flex Connector Care .. 27 Recording Times ... 17 Mating Connector .. 27 Data Records ... 17 Outline Dimensions ... 28 FFT Record Flash Endurance ... 17 Ordering Guide .. 28 Spectral Alarms ... 18 Rev. E | Page 2 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS THEORY OF OPERATION SENSING ELEMENT SIGNAL PROCESSING USER INTERFACE SPI Interface Dual-Memory Structure BASIC OPERATION SPI WRITE COMMANDS SPI READ COMMANDS DATA RECORDING AND SIGNAL PROCESSING RECORDING MODE Manual FFT Mode Automatic FFT Mode Manual Time Capture Mode Real-Time Mode SPECTRAL RECORD PRODUCTION SAMPLE RATE/FILTERING DYNAMIC RANGE/SENSITIVITY Frequency Response Correction Axial Definitions Dynamic Range Settings Scale Adjustment PRE-FFT WINDOWING FFT FFT Averaging RECORDING TIMES DATA RECORDS FFT RECORD FLASH ENDURANCE SPECTRAL ALARMS ALARM DEFINITION Alarm Band Frequency Definitions Alarm Trigger Settings Enable Alarm Settings ALARM INDICATOR SIGNALS ALARM FLAGS AND CONDITIONS ALARM STATUS WORST-CASE CONDITION MONITORING READING OUTPUT DATA READING DATA FROM THE DATA BUFFER ACCESSING FFT RECORD DATA DATA FORMAT REAL-TIME DATA COLLECTION POWER SUPPLY/TEMPERATURE FFT EVENT HEADER SYSTEM TOOLS GLOBAL COMMANDS STATUS/ERROR FLAGS POWER-DOWN OPERATION MANAGMENT Software Busy Indicator Software Escape Code INPUT/OUTPUT FUNCTIONS Busy Indicator Trigger Input Alarm Indicator General-Purpose Input/Output SELF-TEST FLASH MEMORY MANAGEMENT DEVICE IDENTIFICATION APPLICATIONS INFORMATION INTERFACE BOARD FLEX CONNECTOR CARE MATING CONNECTOR OUTLINE DIMENSIONS ORDERING GUIDE