ADE7880 datasheet(2/104 Pages) AD

2 / 104 page

ADE7880

Data Sheet

Rev. A | Page 2 of 104

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

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

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

Accumulation Modes Section....................................................... 67

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

ADE7880 数据表(PDF) 2 Page - Analog Devices

ADE7880 数据表(HTML) 2 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载