Datasheet ADE7978, ADE7933, ADE7932, ADE7923 (Analog Devices) - 4

ADE7978/ADE7933/ADE7932/ADE7923 Data Sheet REVISION HISTORY 2/2018—Rev. C to Rev. D
Added Figure 5; Renumbered Sequential y ... 8 Changes to Table 7 .. 15 Changes to Table 1 ... 8 Updated Outline Dimensions ... 124 Changes to Table 6 .. 14 Changes to Ordering Guide .. 125 Change to Climatic Classification Parameter, Table 8 ... 15

Added ADE7923 Specifications Section and Table 10;
12/2016—Rev. B to Rev. C
Renumbered Sequential y ... 17 Changed CP-28-6 to CP-28-10 .. Throughout Changes to Table 14 ... 20 Change to Note 1 .. 1 Changes to Figure 12 .. 23 Change to Clock Frequency, XTAL 1 Parameter and XTAL 1 Added Figure 13 and Table 16 .. 24 Duty Cycle Parameter .. 17 Added Total Energy Linearity over Supply and Temperature Changes to Figure 11 .. 20 Section .. 25 Changes to Table 15 .. 22 Changes to Figure 17, Figure 18, and Figure 19 ... 25 Changes to Table 16 .. 24 Added Fundamental Energy and RMS Linearity with Fifth Changes to Terminolgy Section .. 33 Harmonic over Supply and Temperature Section .. 26 Changes to Figure 97 .. 75 Changes to Figure 21 and Figure 24 .. 26 Changes to DC-to-DC Converter Section .. 82 Added Total Energy Error over Frequency Section ... 27 Changes to Applications Information Section .. 87 Added RMS Linearity over Temperature and RMS Error over Changes to Bit Stream Communications Between the ADE7978 Frequency Section .. 28 and the ADE7933/ADE7932 and AD7923 Section, Figure 115, Added Energy Linearity Repeatability Section .. 29 and Figure 116 ... 91 Changes to Figure 36 .. 30 Updated Outline Dimensions ... 124 Change to Crosstalk Section ... 32 Changes to Ordering Guide .. 125 Changes to Figure 41 .. 34

Changes to Oversampling Section ... 35
3/2015—Rev. A to Rev. B
Changes to Figure 45 .. 36 Changes to Features Section.. 1 Changes to Current Waveform Gain Registers Section .. 37 Changed Fundamental Active Power to Fundamental Active Changes to Voltage Channel ADCs Section ... 38 Energy; Table 1 .. 8 Changes to Figure 49 .. 69 Changes to Table 6 .. 14 Changes to Reference Circuits Section .. 43 Changes to Regulatory Approvals Section and Table 7 ... 15 Change to Figure 87 ... 73 Changes to Table 9 and Figure 10 ... 16 Change to DC-to-DC Converter Section .. 81 Changes to Table 13 and Related Text ... 19 Changes to Figure 101 ... 83 Added Cumulative Histograms of ADC Gain Temperature Changes to Figure 102 ... 84 Coefficients Section .. 30 Changes to Applications Information Section, Figure 103, Change to Terminology Section ... 32 Figure 104, and ADE7978, ADE7933/ADE7932 and ADE7923 in Changes to ADC Transfer Function Section .. 36 Polyphase Energy Meters Section .. ... ... ... .. .. .. .. ... ... ... 86 Changes to Insulation Lifetime Section and Deleted Figure 114; Added Difference Between the ADE7923 and the Renumbered Sequential y .. 92 ADE7933/ADE7932 Section . ... .. ... ... ... ... ... ... ... .. ... .. .. 86 Changes to Layout Guidelines Section .. 93 Changes to Figure 105. ... .. ... ... ... ... ... ... ... ... ... .. ... ... .. .. 87 Changes to Address 0xE701, Address 0xE709, Address 0xE70A, Changes to Layout Guidelines Section . ... .. ... ... ... ... ... ... ... ... 92 Address 0xE70B, and Address 0xE70C; Table 42 ... 110 Changes to Figure 115 and Figure 116.. ... ... ... .. .. ... ... ... 93 Changes to Bit 7 Default Value; Table 57 ... 121 Changes to Figure 117 and Figure 118.. ... ... ... .. .. ... ... ... 94

Changes to Figure 119.. ... ... ... .. .. .. .. ... ... ... ... ... ... ... .. 95
12/2014—Rev. 0 to Rev. A
Changes to Table 61 . ... .. ... ... ... ... ... ... ... ... ... .. .. .. .. ... 122 Added ADE7923 ... Universal Updated Outline Dimensions . ... .. ... ... ... ... ... ... ... ... ... ... .. 123 Reorganized Layout .. Universal Added Figure 145 . ... .. ... ... ... ... ... ... ... ... ... .. .. .. .. ... ... 124 Changes to Features Section and Figure 1... 1 Changes to Ordering Guide .. ... ... ... .. .. .. .. ... ... ... ... ... 124 Changes to General Description Section .. 3

Moved Revision History Section .. 4
11/2013—Revision 0: Initial Version
Changes to Figure 3 and Figure 4 ... 7 Rev. D | Page 4 of 125 Document Outline Features Applications Typical Application Circuit Revision History General Description Functional Block Diagrams Specifications System Specifications, ADE7978 and ADE7933/ADE7932/ADE7923 ADE7978 Specifications I2C Interface Timing Parameters SPI Interface Timing Parameters HSDC Interface Timing Parameters ADE7933/ADE7932 Specifications Regulatory Approvals Insulation and Safety Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics ADE7923 Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Total Energy Linearity over Supply and Temperature Fundamental Energy and RMS Linearity with Fifth Harmonic over Supply and Temperature Total Energy Error over Frequency RMS Linearity over Temperature and RMS Error over Frequency Energy Linearity Repeatability Cumulative Histograms of ADC Gain Temperature Coefficients Test Circuit Terminology Theory of Operation ADE7933/ADE7932/ADE7923 Analog Inputs Analog-to-Digital Conversion Oversampling Noise Shaping Antialiasing Filter ADC Transfer Function Untitled Current Channel ADC Current Waveform Gain Registers Current Channel HPF Current Channel Sampling Voltage Channel ADCs Second Voltage Channel and Temperature Measurement Voltage Waveform Gain Registers Voltage Channel HPF Voltage Channel Sampling Changing the Phase Voltage Datapath Reference Circuits Phase Compensation Digital Signal Processor Power Quality Measurements Zero-Crossing Detection Zero-Crossing Timeout Phase Sequence Detection Time Interval Between Phases Period Measurement Phase Voltage Sag Detection Sag Detection Level Setting Peak Detection Overvoltage and Overcurrent Detection Overvoltage Detection Overcurrent Detection Overvoltage and Overcurrent Level Setting Neutral Current Mismatch Root Mean Square Measurement Current RMS Calculation Current RMS Offset Compensation Voltage RMS Calculation Voltage RMS Offset Compensation Voltage RMS in Delta Configurations Active Power Calculation Total Active Power Calculation Fundamental Active Power Calculation Active Power Gain Calibration Active Power Offset Calibration Sign of Active Power Calculation Active Energy Calculation Integration Time Under Steady Load Energy Accumulation Modes BWATTHR and BFWATTHR Accumulation Register in 3-Phase, 3-Wire Configurations Line Cycle Active Energy Accumulation Mode Reactive Power Calculation Total Reactive Power Calculation Fundamental 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 Modes BWATTHR and BFWATTHR Accumulation Register in 3-Phase, 3-Wire Configurations Line Cycle Reactive Energy Accumulation Mode Apparent Power Calculation Apparent Power Gain Calibration Apparent Power Offset Calibration Apparent Power Calculation Using VNOM Apparent Energy Calculation Integration Time Under Steady Load Energy Accumulation Mode BWATTHR and BFWATTHR Accumulation Register in 3-Phase, 3-Wire Configurations Line Cycle Apparent Energy Accumulation Mode Power Factor Calculation and Total Harmonic Distortion Calculation Power Factor Calculation Total Harmonic Distortion Calculation Waveform Sampling Mode Energy-to-Frequency Conversion TERMSELx[2:0] Bits CFxSEL[2:0] Bits Energy-to-Frequency Conversion Process Synchronizing Energy Registers with the CFx Outputs Energy Registers and CFx Outputs for Various Accumulation Modes Sign of Sum of Phase Powers in the CFx Datapath No Load Condition No Load Detection Based on Total Active and Reactive Powers No Load Detection Based on Fundamental Active and Reactive Powers No Load Detection Based on Apparent Power Interrupts Using the Interrupts with an MCU Power Management DC-to-DC Converter Magnetic Field Immunity Power-Up Procedure Initializing the Chipset Hardware Reset ADE7978/ADE7933/ADE7932 and ADE7923 Chipset Software Reset ADE7933/ADE7932 and ADE7923 Software Reset Low Power Mode Applications Information Differences Between the ADE7923 and the ADE7933/ADE7932 ADE7978, ADE7933/ADE7932 and ADE7923 in Polyphase Energy Meters ADE7978 Quick Setup as an Energy Meter Bit Stream Communication Between the ADE7978 and the ADE7933/ADE7932 and ADE7923 ADE7978, ADE7933/ADE7932, and ADE7923 Clocks Insulation Lifetime Layout Guidelines ADE7978 and ADE7933/ADE7932 Evaluation Board ADE7978 Die Version Serial Interfaces Serial Interface Selection Communication Verification I2C-Compatible Interface I2C Write Operation I2C Read Operation I2C Burst Read Operation SPI-Compatible Interface SPI Write Operation SPI Read Operation SPI Burst Read Operation HSDC Interface Checksum Register Register List Outline Dimensions Ordering Guide