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AD7734 数据表(PDF) 3 Page - Analog Devices |
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AD7734 数据表(HTML) 3 Page - Analog Devices |
3 / 33 page AD7734 Data Sheet Rev. B | Page 2 of 32 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 6 Absolute Maximum Ratings............................................................ 8 ESD Caution.................................................................................. 8 Typical Performance Characteristics ............................................. 9 Output Noise and Resolution Specification................................ 10 Chopping Enabled...................................................................... 10 Chopping Disabled..................................................................... 11 Pin Configuration and Function 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................................................................... 16 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 AD7734 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 Σ-Δ 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 Outline Dimensions ....................................................................... 32 Ordering Guide .......................................................................... 32 REVISION HISTORY 9/15—Rev. A to Rev. B Change to Figure 14 ....................................................................... 22 Changes to Figure 28...................................................................... 29 Changes to Ordering Guide .......................................................... 32 7/12—Rev. 0 to Rev. A Changes to ADC Performance Chop Enabled Parameter .......... 3 Changes to Figure 22...................................................................... 25 2/03—Revision 0: Initial Version |
类似零件编号 - AD7734 |
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类似说明 - AD7734 |
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