Datasheet ADE7758 (Analog Devices) - 3

Data Sheet ADE7758
Changes to Current RMS Calculation Section..28 Changes to Energy Accumulation Mode Section...33 Changes to Voltage Channel RMS Calculation Section and Changes to the Reactive Power Calculation Section ..35 Figure 63 ...29 Added Equation 32...36 Changes to Table 17 ..60 Changes to Energy Accumulation Mode Section...38 Changes to Ordering Guide...70 Changes to the Reactive Power Frequency Output Section ..38
7/06—Rev. B to Rev. C
Changes to the Apparent Energy Calculation Section...40 Updated Format.. Universal Changes to the Calibration Section ..42 Changes to Figure 1...1 Changes to Figure 76 through Figure 84... 43–54 Changes to Table 2 ..6 Changes to Table 15 ..59 Changes to Table 4 ..9 Changes to Table 16 ..63 Changes to Figure 34 and Figure 35 ...17 Changes to Ordering Guide...69 Changes to Current Waveform Gain Registers Section and
9/04—Rev. 0 to Rev. A
Current Channel Sampling Section ..19 Changed Hexadecimal Notation.. Universal Changes to Voltage Channel Sampling Section ..22 Changes to Features List...1 Changes to Zero-Crossing Timeout Section ...23 Changes to Specifications Table ..5 Changes to Figure 60 ..27 Change to Figure 25..16 Changes to Current RMS Calculation Section..28 Additions to the Analog Inputs Section...19 Changes to Current RMS Offset Compensation Section and Added Figures 36 and 37; Renumbered Subsequent Figures..19 Voltage Channel RMS Calculation Section ...29 Changes to Period Measurement Section ..26 Added Table 7 and Table 9; Renumbered Sequentially..29 Change to Peak Voltage Detection Section ...26 Changes to Figure 65 ..30 Added Figure 60 ..27 Changes to Active Power Offset Calibration Section...31 Change to the Current RMS Offset Compensation Section ...29 Changes to Reactive Power Frequency Output Section...38 Edits to Active Power Frequency Output Section ..33 Changes to Apparent Power Frequency Output Section and Added Figure 68; Renumbered Subsequent Figures ..33 Waveform Sampling Mode Section ..41 Changes to Reactive Power Frequency Output Section...37 Changes to Gain Calibration Using Line Added Figure 73; Renumbered Subsequent Figures ..38 Accumulation Section ..49 Change to Gain Calibration Using Pulse Output Example ...44 Changes to Example: Power Offset Calibration Using Line Changes to Equation 37 ...45 Accumulation Section ..53 Changes to Example—Phase Calibration of Phase A Changes to Calibration of IRMS and VRMS Offset Section ...54 Using Pulse Output ...45 Changes to Table 18 ..64 Changes to Equations 56 and 57 ...53 Changes to Table 20 ..65 Addition to the ADE7758 Interrupts Section ...54
11/05—Rev. A to Rev. B
Changes to Example-Calibration of RMS Offsets ..54 Changes to Table 1 ..5 Addition to Table 20 ...66 Changes to Figure 23 Caption ...14
1/04—Revision 0: Initial Version
Changes to Current Waveform Gain Registers Section ...19 Changes to di/dt Current Sensor and Digital Integrator Section..20 Changes to Phase Compensation Section..23 Changes to Figure 57 ..25 Changes to Figure 60 ..27 Changes to Temperature Measurement Section and Root Mean Square Measurement Section ..28 Inserted Table 6..28 Changes to Current RMS Offset Compensation Section ..29 Inserted Table 7..29 Added Equation 17 ...31 Rev. E | Page 3 of 72 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS GENERAL DESCRIPTION SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION ANTIALIASING FILTER ANALOG INPUTS CURRENT CHANNEL ADC Current Channel Sampling di/dt CURRENT SENSOR AND DIGITAL INTEGRATOR PEAK CURRENT DETECTION Peak Current Detection Using the PEAK Register OVERCURRENT DETECTION INTERRUPT VOLTAGE CHANNEL ADC Voltage Channel Sampling ZERO-CROSSING DETECTION Zero-Crossing Timeout PHASE COMPENSATION PERIOD MEASUREMENT LINE VOLTAGE SAG DETECTION SAG LEVEL SET PEAK VOLTAGE DETECTION Peak Voltage Detection Using the VPEAK Register Overvoltage Detection Interrupt PHASE SEQUENCE DETECTION POWER-SUPPLY MONITOR REFERENCE CIRCUIT TEMPERATURE MEASUREMENT ROOT MEAN SQUARE MEASUREMENT Current RMS Calculation Current RMS Offset Compensation Voltage Channel RMS Calculation Voltage RMS Offset Compensation Voltage RMS Gain Adjust ACTIVE POWER CALCULATION Active Power Gain Calibration Active Power Offset Calibration Sign of Active Power Calculation No-Load Threshold Active Energy Calculation Integration Time Under Steady Load Energy Accumulation Mode Active Power Frequency Output Line Cycle Active Energy Accumulation Mode REACTIVE POWER CALCULATION Reactive Power Gain Calibration Reactive Power Offset Calibration Sign of Reactive Power Calculation Reactive Energy Calculation Integration Time Under Steady Load Energy Accumulation Mode Reactive Power Frequency Output Line Cycle Reactive Energy Accumulation Mode APPARENT POWER CALCULATION Apparent Power Gain Calibration Apparent Power Offset Calibration Apparent Energy Calculation Integration Time Under Steady Load Energy Accumulation Mode Apparent Power Frequency Output Line Cycle Apparent Energy Accumulation Mode ENERGY REGISTERS SCALING WAVEFORM SAMPLING MODE CALIBRATION Calibration Using Pulse Output Gain Calibration Using Pulse Output Example: Watt Gain Calibration of Phase A Using Pulse Output Phase Calibration Using Pulse Output Example: Phase Calibration of Phase A Using Pulse Output Power Offset Calibration Using Pulse Output Example: Offset Calibration of Phase A Using Pulse Output Calibration Using Line Accumulation Gain Calibration Using Line Accumulation Example: Watt Gain Calibration Using Line Accumulation Phase Calibration Using Line Accumulation Example: Phase Calibration Using Line Accumulation Power Offset Calibration Using Line Accumulation Example: Power Offset Calibration Using Line Accumulation Calibration of IRMS and VRMS Offset Example: Calibration of RMS Offsets CHECKSUM REGISTER INTERRUPTS USING THE INTERRUPTS WITH AN MCU INTERRUPT TIMING SERIAL INTERFACE SERIAL WRITE OPERATION SERIAL READ OPERATION ACCESSING THE ON-CHIP REGISTERS REGISTERS COMMUNICATIONS REGISTER OPERATIONAL MODE REGISTER (0x13) MEASUREMENT MODE REGISTER (0x14) WAVEFORM MODE REGISTER (0x15) COMPUTATIONAL MODE REGISTER (0x16) LINE CYCLE ACCUMULATION MODE REGISTER (0x17) INTERRUPT MASK REGISTER (0x18) INTERRUPT STATUS REGISTER (0x19)/RESET INTERRUPT STATUS REGISTER (0x1A) OUTLINE DIMENSIONS ORDERING GUIDE