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ADE7880
TABLE OF CONTENTS
Features .............................................................................................. 1 ?
Applications....................................................................................... 1 ?
General Description ......................................................................... 1 ?
Revision History ............................................................................... 2 ?
Functional Block Diagram .............................................................. 3 ?
Specifications..................................................................................... 4 ?
Timing Characteristics ................................................................ 7 ?
Absolute Maximum Ratings.......................................................... 10 ?
Thermal Resistance .................................................................... 10 ?
ESD Caution................................................................................ 10 ?
Pin Configuration and Function Descriptions........................... 11 ?
Typical Performance Characteristics ........................................... 13 ?
Test Circuit ...................................................................................... 18 ?
Terminology .................................................................................... 19 ?
Power Management........................................................................ 20 ?
PSM0—Normal Power Mode (All Parts)................................ 20 ?
PSM1—Reduced Power Mode.................................................. 20 ?
PSM2—Low Power Mode ......................................................... 20 ?
PSM3—Sleep Mode (All Parts) ................................................ 21 ?
Power-Up Procedure.................................................................. 23 ?
Hardware Reset........................................................................... 24 ?
Software Reset Functionality .................................................... 24 ?
Theory of Operation ...................................................................... 25 ?
Analog Inputs.............................................................................. 25 ?
Analog-to-Digital Conversion.................................................. 25 ?
Current Channel ADC............................................................... 26 ?
di/dt Current Sensor and Digital Integrator............................... 28 ?
Voltage Channel ADC ............................................................... 29 ?
REVISION HISTORY
3/12—Rev. 0 to Rev. A
Removed References to + N (Plus Noise) and changed VTHDN
to VTHD and ITHDN to ITHD.................................. Throughout
Changes to Reactive Energy Management Parameter in Table 1 .... 4
Changes to Figure 6........................................................................ 11
Changes to Table 7.......................................................................... 12
Changes to Phase Compensation Section ................................... 36
Changes to Equation 13 ................................................................. 39
Changes to Equation 33 ................................................................. 49
Changes to Fundamental Reactive Energy Calculation Section ... 51
Changes to Figure 80...................................................................... 55
Changes to Figure 85...................................................................... 62
Changes to Energy Registers and CF Outputs for Various
Data Sheet
Changing Phase Voltage Data path.......................................... 30 ?
Power Quality Measurements................................................... 31 ?
Phase Compensation ................................................................. 36 ?
Reference Circuit........................................................................ 38 ?
Digital Signal Processor............................................................. 38 ?
Root Mean Square Measurement............................................. 39 ?
Active Power Calculation .......................................................... 43 ?
Fundamental Reactive Power Calculation.............................. 49 ?
Apparent Power Calculation..................................................... 53 ?
Power Factor Calculation .......................................................... 55 ?
Harmonics Calculations............................................................ 56 ?
Waveform Sampling Mode ....................................................... 64 ?
Energy-to-Frequency Conversion............................................ 64 ?
No Load Condition .................................................................... 69 ?
Checksum Register..................................................................... 71 ?
Interrupts..................................................................................... 72 ?
Serial Interfaces .......................................................................... 73 ?
ADE7880 Quick Setup As Energy Meter ................................ 80 ?
ADE7880 Evaluation Board...................................................... 80 ?
Die Version.................................................................................. 80 ?
Silicon Anomaly ............................................................................. 81 ?
ADE7880 Functionality Issues ................................................. 81 ?
Functionality Issues.................................................................... 81 ?
Section 1. ADE7880 Functionality Issues ............................... 82 ?
Registers List ................................................................................... 83 ?
Outline Dimensions ..................................................................... 103 ?
Ordering Guide ........................................................................ 103 ?
Changes to Figure 95...................................................................... 69
Changes to No Load Condition Section...................................... 69
Changes to Equation 53................................................................. 71
Changes to Figure 100 ................................................................... 74
Changes to Figure 101 and to Figure 102.................................... 75
Changes to SPI-Compatible Interface Section ........................... 76
Changes to HSDC Interface Section............................................ 78
Changes to Figure 109 and to Figure 110.................................... 80
Changes to Silicon Anomaly Section........................................... 81
Changes to Table 48 ....................................................................... 99
Changes to Table 52 ..................................................................... 101
10/11—Revision 0: Initial Version
Accumulation Modes Section....................................................... 67
Rev. A | Page 2 of 104
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