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AD7490BRU-REEL7 Datasheet(PDF) 2 Page - Analog Devices |
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AD7490BRU-REEL7 Datasheet(HTML) 2 Page - Analog Devices |
2 / 28 page AD7490 Data Sheet Rev. D | Page 2 of 28 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configurations and Function Descriptions ........................... 7 Typical Performance Characteristics ............................................. 8 Terminology .................................................................................... 10 Internal Register Structure ............................................................ 12 Control Register.......................................................................... 12 Shadow Register ......................................................................... 14 Theory of Operation ...................................................................... 16 Circuit Information.................................................................... 16 Converter Operation.................................................................. 16 ADC Transfer Function............................................................. 17 Typical Connection Diagram ................................................... 18 Modes of Operation................................................................... 19 Serial Interface............................................................................ 22 Power vs. Throughput Rate....................................................... 23 Microprocessor Interfacing....................................................... 24 Application Hints ....................................................................... 25 Outline Dimensions....................................................................... 26 Ordering Guide .......................................................................... 27 REVISION HISTORY 12/12—Rev. C to Rev. D Changes to Figure 4 and Table 4 ............................................................. 7 Updated Outline Dimensions (Changed CP-32-2 to CP-32-7).....26 Changes to Ordering Guide ...........................................................27 6/09—Rev. B to Rev. C Change to IDD Auto Standby Mode Parameter, Table 1 ............... 4 5/08—Rev. A to Rev. B Updated Format..................................................................Universal Changes to Table 1............................................................................ 3 Changes to Figure 12 and Figure 13............................................. 14 Changes to Figure 14...................................................................... 15 Changes to Reference Section....................................................... 19 Updated Outline Dimensions ....................................................... 26 Changes to Ordering Guide .......................................................... 27 10/02—Rev. 0 to Rev. A Addition to General Description.....................................................1 Changes to Timing Specification Notes .........................................4 Change to Absolute Maximum Ratings .........................................5 Addition to Ordering Guide ............................................................5 Changes to Typical Performance Characteristics..........................8 Added new Figure 9 ..........................................................................8 Changes to Figure 12 and Figure 14............................................. 11 Changes to Figure 20...................................................................... 13 Changes to Figure 20 to Figure 26................................................ 14 Addition to Analog Input section ................................................ 14 Change to Figure 29 caption ......................................................... 18 Change to Figure 30 to Figure 32 ................................................. 18 Added Application Hints section ................................................. 20 1/02—Revision 0: Initial Version |
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