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ADE7903 데이터시트(PDF) 2 Page - Analog Devices |
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ADE7903 데이터시트(HTML) 2 Page - Analog Devices |
2 / 20 page ADE7903 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Typical Application Circuit ............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Functional Block Diagram .............................................................. 3 Specifications..................................................................................... 4 Timing Characteristics ................................................................ 6 Absolute Maximum Ratings............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Typical Performance Characteristics ............................................. 9 Test Circuit ...................................................................................... 11 Terminology .................................................................................... 12 Theory of Operation ...................................................................... 14 Analog Inputs.............................................................................. 14 Analog-to-Digital Conversion.................................................. 14 Reference Circuit........................................................................ 16 CRC of ADC Output Values ..................................................... 16 Temperature Sensor ................................................................... 16 Protecting the Integrity of Configuration Registers.............. 17 CRC of Configuration Registers............................................... 17 ADE7903 Status.......................................................................... 17 Applications Information .............................................................. 18 ADE7903 in Polyphase Energy Meters ................................... 18 ADE7903 in Single-Phase Energy Meters............................... 19 ADE7903 Clock.......................................................................... 20 SPI-Compatible Interface.......................................................... 20 Synchronizing Multiple ADE7912/ADE7913 and ADE7903 Devices....................................................................... 22 Power Management........................................................................ 23 Power-Up and Initialization Procedures................................. 23 Hardware Reset........................................................................... 24 Software Reset............................................................................. 24 Power-Down Mode.................................................................... 24 Layout Guidelines........................................................................... 25 ADE7903 Evaluation Board...................................................... 25 ADE7903 Version....................................................................... 25 Register List..................................................................................... 26 Outline Dimensions....................................................................... 28 Ordering Guide .......................................................................... 28 REVISION HISTORY 12/14—Revision 0: Initial Version Rev. 0 | Page 2 of 28 |
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