Datasheet

ADE7816 Data Sheet
Rev. A | Page 2 of 48
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings ............................................................ 8
Thermal Resistance ...................................................................... 8
ESD Caution .................................................................................. 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 11
Test Circuit ...................................................................................... 14
Terminology .................................................................................... 15
Quick Start ....................................................................................... 16
Inputs ................................................................................................ 17
Power and Ground ..................................................................... 17
Reference Circuit ........................................................................ 17
Reset ............................................................................................. 17
CLKIN and CLKOUT ................................................................ 18
Analog Inputs .............................................................................. 18
Energy Measurements .................................................................... 20
Starting and Stopping the DSP ................................................. 20
Active Energy Measurement ..................................................... 20
Reactive Energy Measurement ................................................. 21
Line Cycle Accumulation Mode ............................................... 22
Root Mean Square Measurement ............................................. 23
No Load Detection ..................................................................... 23
Energy Calibration ......................................................................... 24
Channel Matching ...................................................................... 24
Energy Gain Calibration ........................................................... 24
Energy Offset Calibration ......................................................... 24
Energy Phase Calibration .......................................................... 25
RMS Offset Calibration ............................................................. 25
Power Quality Features .................................................................. 26
Selecting a Current Channel Group ........................................ 26
Instantaneous Waveforms ......................................................... 26
Zero-Crossing Detection ........................................................... 26
Peak Detection ............................................................................ 27
Overcurrent and Overvoltage Detection ................................ 27
Indication of Power Direction .................................................. 28
Angle Measurements ................................................................. 28
Period Measurement .................................................................. 29
Voltage Sag Detection ................................................................ 29
Setting the SAGCYC Register ................................................... 29
Setting the SAGLVL Register .................................................... 29
Voltage Sag Interrupt ................................................................. 29
Checksum .................................................................................... 30
Outputs ............................................................................................ 31
Interrupts ..................................................................................... 31
Communication ......................................................................... 31
Registers ........................................................................................... 36
Register Protection ..................................................................... 36
Register Format .......................................................................... 36
Register Maps .............................................................................. 37
Outline Dimensions ....................................................................... 45
Ordering Guide .......................................................................... 45
REVISION HISTORY
12/13—Rev. 0 to Rev. A
Changes to EPAD Notation and Changed Pin 33 and Pin 34
Descriptions ...................................................................................... 9
Changes to Energy Phase Calibration Section ........................... 25
Changes to Zero-Crossing Detection Section and Figure 33 ... 26
Changes to Indication of Power Direction Section .................... 28
Changes to Table 12 ........................................................................ 38
Changes to Bits[7:6] Description; Table 26 ................................. 43
2/12—Revision 0: Initial Version