ADIS16228

Data Sheet

Rev. B | Page 2 of 28

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Specifications .................................................................. 4

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Theory of Operation ........................................................................ 7

Sensing Element ........................................................................... 7

Signal Processing .......................................................................... 7

User Interface................................................................................ 7

Basic Operation................................................................................. 8

SPI Write Commands .................................................................. 8

SPI Read Commands ................................................................... 8

Data Recording and Signal Processing ........................................ 11

Recording Mode ......................................................................... 11

Spectral Record Production...................................................... 12

Sample Rate/Filtering................................................................. 12

Dynamic Range/Sensitivity....................................................... 14

Pre-FFT Windowing .................................................................. 15

FFT ............................................................................................... 16

Recording Times......................................................................... 16

Data Records ............................................................................... 16

FFT Record Flash Endurance ................................................... 16

Spectral Alarms............................................................................... 17

Alarm Definition........................................................................ 17

Alarm Indicator Signals............................................................. 18

Alarm Flags and Conditions..................................................... 18

Alarm Status................................................................................ 19

Worst-Case Condition Monitoring.......................................... 19

Reading Output Data ..................................................................... 20

Reading Data from the Data Buffer......................................... 20

Accessing FFT Record Data...................................................... 20

Data Format ................................................................................ 21

Real-Time Data Collection ....................................................... 21

Power Supply/Temperature....................................................... 21

FFT Event Header ...................................................................... 22

System Tools.................................................................................... 23

Global Commands ..................................................................... 23

Status/Error Flags....................................................................... 23

Power-Down ............................................................................... 23

Operation Managment .............................................................. 24

Input/Output Functions ............................................................ 24

Self-Test ....................................................................................... 25

Flash Memory Management..................................................... 25

Device Identification.................................................................. 25

Applications Information .............................................................. 26

Interface Board ........................................................................... 26

Mating Connector...................................................................... 26

Outline Dimensions....................................................................... 27

Ordering Guide .......................................................................... 27

REVISION HISTORY

3/12—Rev. A to Rev. B

Changes to Recording Times Section and Table 21................... 16

Changes to Interface Board Section............................................. 26

8/11—Rev. 0 to Rev. A

Changes to General Description .................................................... 1

Changes to Output Noise and Bandwidth Parameters, Table 1.... 3

Added CAL_ENABLE Register to Table 8 .................................. 10

Changes to Real-Time Mode Section; Changes to Table 11;

Change to Figure 14 ....................................................................... 12

Changes to Figure 15...................................................................... 13

Added Dynamic Range/Sensitivity Section; Added Table 13,

Renumbered Sequentially; Added Figure 16, Figure 17, and

Figure 18, Renumbered Sequentially ........................................... 14

Change to Dynamic Range Settings Section............................... 15

Changes to Recording Times Section.......................................... 16

Changes to Figure 20 and Figure 21 ............................................ 20

Changes to Table 49, Table 50, and Table 51; Change to

Real-Time Data Collection Section ............................................. 21

Change to Power-Down Section .................................................. 23

7/11—Revision 0: Initial Version