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AD7172-4 Datasheet(PDF) 3 Page - Analog Devices |
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AD7172-4 Datasheet(HTML) 3 Page - Analog Devices |
3 / 62 page AD7172-4 Data Sheet Rev. B | Page 2 of 61 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 3 Specifications..................................................................................... 4 Timing Characteristics ................................................................ 7 Timing Diagrams.......................................................................... 7 Absolute Maximum Ratings............................................................ 8 Thermal Resistance ...................................................................... 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics ........................................... 11 Noise Performance and Resolution.............................................. 17 Getting Started ................................................................................ 18 Power Supplies ............................................................................ 19 Digital Communication............................................................. 19 AD7172-4 Reset.......................................................................... 20 Configuration Overview ........................................................... 20 Circuit Description......................................................................... 26 Buffered Analog Input ............................................................... 26 Crosspoint Multiplexer.............................................................. 26 AD7172-4 Reference .................................................................. 27 Buffered Reference Input........................................................... 28 Clock Source ............................................................................... 28 Digital Filters................................................................................... 29 Sinc5 + Sinc1 Filter..................................................................... 29 Sinc3 Filter................................................................................... 29 Single Cycle Settling ................................................................... 30 Enhanced 50 Hz and 60 Hz Rejection Filters ......................... 33 Operating Modes ............................................................................ 35 Continuous Conversion Mode ................................................. 35 Continuous Read Mode............................................................. 36 Single Conversion Mode ........................................................... 37 Standby and Power-Down Modes............................................ 38 Calibration................................................................................... 38 Digital Interface .............................................................................. 39 Checksum Protection................................................................. 39 CRC Calculation......................................................................... 40 Integrated Functions ...................................................................... 42 General-Purpose Input/Output................................................ 42 External Multiplexer Control ................................................... 42 Delay ............................................................................................ 42 16-Bit/24-Bit Conversions......................................................... 42 DOUT_RESET ........................................................................... 42 Synchronization.......................................................................... 42 Error Flags................................................................................... 43 DATA_STAT ............................................................................... 43 IOSTRENGTH ........................................................................... 43 Grounding and Layout .................................................................. 44 Register Summary .......................................................................... 45 Register Details ............................................................................... 47 Communications Register......................................................... 47 Status Register............................................................................. 48 ADC Mode Register................................................................... 49 Interface Mode Register ............................................................ 50 Register Check ............................................................................ 51 Data Register............................................................................... 51 GPIO Configuration Register................................................... 52 ID Register................................................................................... 53 Channel Register 0 ..................................................................... 54 Channel Register 1 to Channel Register 7 .............................. 55 Setup Configuration Register 0 ................................................ 56 Setup Configuration Register 1 to Setup Configuration Register 7 ..................................................................................... 57 Filter Configuration Register 0................................................. 58 Filter Configuration Register 1 to Filter Configuration Register 7 ..................................................................................... 59 Offset Register 0 ......................................................................... 59 Offset Register 1 to Offset Register 7....................................... 59 Gain Register 0............................................................................ 60 Gain Register 1 to Gain Register 7 ........................................... 60 Outline Dimensions ....................................................................... 61 Ordering Guide .......................................................................... 61 |
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