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AD7194BCPZ-REEL7 Arkusz danych(PDF) 2 Page - Analog Devices |
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AD7194BCPZ-REEL7 Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 56 page AD7194 Rev. 0 | Page 2 of 56 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 7 Absolute Maximum Ratings............................................................ 9 Thermal Resistance ...................................................................... 9 ESD Caution.................................................................................. 9 Pin Configuration and Function Descriptions........................... 10 Typical Performance Characteristics ........................................... 12 RMS Noise and Resolution............................................................ 15 Sinc4 Chop Disabled................................................................... 15 Sinc3 Chop Disabled................................................................... 16 Fast Settling ................................................................................. 17 On-Chip Registers .......................................................................... 18 Communications Register......................................................... 19 Status Register ............................................................................. 20 Mode Register ............................................................................. 21 Configuration Register .............................................................. 24 Data Register ............................................................................... 27 ID Register................................................................................... 27 GPOCON Register ..................................................................... 27 Offset Register............................................................................. 28 Full-Scale Register ...................................................................... 28 ADC Circuit Information.............................................................. 29 Overview...................................................................................... 29 Analog Input Channel ............................................................... 30 Programmable Gain Array (PGA)........................................... 30 Reference ..................................................................................... 30 Reference Detect......................................................................... 31 Bipolar/Unipolar Configuration .............................................. 31 Data Output Coding .................................................................. 31 Burnout Currents ....................................................................... 31 Digital Interface.......................................................................... 32 Reset ............................................................................................. 36 System Synchronization ............................................................ 36 Enable Parity ............................................................................... 36 Clock ............................................................................................ 36 Temperature Sensor ................................................................... 36 Logic Outputs ............................................................................. 37 Calibration................................................................................... 37 Digital Filter .................................................................................... 39 Sinc4 Filter (Chop Disabled) ..................................................... 39 Sinc3 Filter (Chop Disabled) ..................................................... 41 Chop Enabled (Sinc4 Filter) ...................................................... 43 Chop Enabled (Sinc3 Filter) ...................................................... 45 Fast Settling Mode (Sinc4 Filter)............................................... 46 Fast Settling Mode (Sinc3 Filter)............................................... 48 Fast Settling Mode (Chop Enabled)......................................... 50 Summary of Filter Options ....................................................... 51 Grounding and Layout .................................................................. 52 Applications Information .............................................................. 53 Flowmeter.................................................................................... 53 Outline Dimensions ....................................................................... 54 Ordering Guide .......................................................................... 54 REVISION HISTORY 10/09—Revision 0: Initial Version |
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