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AD7732BRU Arkusz danych(PDF) 2 Page - Analog Devices |
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AD7732BRU Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 32 page AD7732 TABLE OF CONTENTS AD7732—Specifications.................................................................. 3 Timing Specifications....................................................................... 6 Absolute Maximum Ratings............................................................ 8 Typical Performance Characteristics ............................................. 9 Output Noise and Resolution Specification................................ 10 Chopping Enabled...................................................................... 10 Chopping Disabled..................................................................... 11 Pin Configurations and Functional Descriptions ...................... 12 Register Description....................................................................... 14 Register Access............................................................................ 15 Communications Register......................................................... 15 I/O Port Register......................................................................... 16 Revision Register ........................................................................ 16 Test Register ................................................................................ 16 ADC Status Register................................................................... 17 Checksum Register..................................................................... 17 ADC Zero-Scale Calibration Register ..................................... 17 ADC Full-Scale Register............................................................ 17 Channel Data Registers ............................................................. 17 Channel Zero-Scale Calibration Registers .............................. 18 Channel Full-Scale Calibration Registers................................ 18 Channel Status Registers ........................................................... 18 Channel Setup Registers ............................................................ 19 Channel Conversion Time Registers ....................................... 19 Mode Register ............................................................................. 20 Digital Interface Description ........................................................ 22 Hardware ..................................................................................... 22 Reset ............................................................................................. 23 Access the AD7732 Registers.................................................... 23 Single Conversion and Reading Data ...................................... 23 Dump Mode................................................................................ 24 Continuous Conversion Mode ................................................. 24 Continuous Read (Continuous Conversion) Mode .............. 25 Circuit Description......................................................................... 26 Analog Front End....................................................................... 26 Analog Input’s Extended Voltage Range ................................. 27 Chopping ..................................................................................... 27 Multiplexer, Conversion, and Data Output Timing.............. 28 Sigma-Delta ADC....................................................................... 28 Frequency Response .................................................................. 29 Voltage Reference Inputs........................................................... 29 Reference Detect......................................................................... 29 I/O Port........................................................................................ 30 Calibration................................................................................... 30 ADC Zero-Scale Self-Calibration ............................................ 30 Per Channel System Calibration .............................................. 30 High Common-Mode Voltage Application............................. 31 Outline Dimensions ....................................................................... 32 REVISION HISTORY Revision 0: Initial Version Rev. 0 | Page 2 of 32 |
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