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ADE7933 Arkusz danych(PDF) 2 Page - Analog Devices |
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ADE7933 Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 120 page ADE7978/ADE7933/ADE7932 Data Sheet Rev. 0 | Page 2 of 120 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Typical Application Circuit ............................................................. 1 Revision History ............................................................................... 3 General Description ......................................................................... 4 Functional Block Diagrams............................................................. 5 Specifications..................................................................................... 7 System Specifications, ADE7978 and ADE7933/ADE7932 ... 7 ADE7978 Specifications .............................................................. 9 ADE7933/ADE7932 Specifications.......................................... 13 Absolute Maximum Ratings.......................................................... 16 Thermal Resistance .................................................................... 16 ESD Caution................................................................................ 16 Pin Configurations and Function Descriptions ......................... 17 Typical Performance Characteristics ........................................... 21 Test Circuit ...................................................................................... 26 Terminology .................................................................................... 27 Theory of Operation ...................................................................... 30 ADE7933/ADE7932 Analog Inputs......................................... 30 Analog-to-Digital Conversion.................................................. 30 Current Channel ADC............................................................... 32 Voltage Channel ADCs.............................................................. 35 Changing the Phase Voltage Datapath .................................... 39 Reference Circuits ...................................................................... 39 Phase Compensation.................................................................. 40 Digital Signal Processor............................................................. 41 Power Quality Measurements....................................................... 42 Zero-Crossing Detection........................................................... 42 Period Measurement.................................................................. 44 Phase Voltage Sag Detection..................................................... 45 Peak Detection............................................................................ 46 Overvoltage and Overcurrent Detection................................. 47 Neutral Current Mismatch........................................................ 48 Root Mean Square Measurement ................................................. 49 Current RMS Calculation.......................................................... 49 Voltage RMS Calculation .......................................................... 50 Voltage RMS in Delta Configurations ..................................... 51 Active Power Calculation .............................................................. 52 Total Active Power Calculation ................................................ 52 Fundamental Active Power Calculation.................................. 53 Active Power Gain Calibration................................................. 53 Active Power Offset Calibration............................................... 54 Sign of Active Power Calculation............................................. 54 Active Energy Calculation ........................................................ 54 Integration Time Under Steady Load...................................... 55 Energy Accumulation Modes ................................................... 56 Line Cycle Active Energy Accumulation Mode ..................... 56 Reactive Power Calculation .......................................................... 58 Total Reactive Power Calculation ............................................ 58 Fundamental Reactive Power Calculation.............................. 58 Reactive Power Gain Calibration ............................................. 58 Reactive Power Offset Calibration........................................... 58 Sign of Reactive Power Calculation ......................................... 59 Reactive Energy Calculation..................................................... 59 Integration Time Under Steady Load...................................... 60 Energy Accumulation Modes ................................................... 61 Line Cycle Reactive Energy Accumulation Mode ................. 61 Apparent Power Calculation......................................................... 62 Apparent Power Gain Calibration............................................ 62 Apparent Power Offset Calibration ......................................... 62 Apparent Power Calculation Using VNOM........................... 62 Apparent Energy Calculation ................................................... 63 Integration Time Under Steady Load...................................... 64 Energy Accumulation Mode..................................................... 64 Line Cycle Apparent Energy Accumulation Mode................ 64 Power Factor Calculation and Total Harmonic Distortion Calculation................................................................... 65 Power Factor Calculation.......................................................... 65 Total Harmonic Distortion Calculation.................................. 66 Waveform Sampling Mode............................................................ 67 Energy-to-Frequency Conversion................................................ 68 TERMSELx[2:0] Bits.................................................................. 68 CFxSEL[2:0] Bits ........................................................................ 68 Energy-to-Frequency Conversion Process ............................. 69 |
Podobny numer części - ADE7933 |
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Podobny opis - ADE7933 |
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