Datasheet

ADE7763 Data Sheet
Rev. C | Page 2 of 56
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
Timing Characteristics ................................................................ 6
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Terminology ...................................................................................... 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 11
Theory of Operation ...................................................................... 14
Analog Inputs .............................................................................. 14
di/dt Current Sensor and Digital Integrator ........................... 15
Zero-Crossing Detection ........................................................... 16
Period Measurement .................................................................. 17
Power Supply Monitor ............................................................... 17
Line Voltage Sag Detection ....................................................... 18
Peak Detection ............................................................................ 18
Interrupts ..................................................................................... 19
Temperature Measurement ....................................................... 20
Analog-to-Digital Conversion .................................................. 20
Channel 1 ADC .......................................................................... 21
Channel 2 ADC .......................................................................... 23
Phase Compensation .................................................................. 24
Active Power Calculation .......................................................... 25
Energy Calculation ..................................................................... 27
Power Offset Calibration ........................................................... 29
Energy-to-Frequency Conversion............................................ 29
Line Cycle Energy Accumulation Mode ................................. 31
Positive-Only Accumulation Mode ......................................... 31
No-Load Threshold .................................................................... 31
Apparent Power Calculation ..................................................... 32
Apparent Energy Calculation ................................................... 33
Line Apparent Energy Accumulation ...................................... 34
Energies Scaling .......................................................................... 35
Calibrating an Energy Meter .................................................... 35
CLKIN Frequency ...................................................................... 44
Suspending Functionality.......................................................... 45
Checksum Register..................................................................... 45
Serial Interface ............................................................................ 45
Registers ........................................................................................... 48
Register Descriptions ..................................................................... 51
Communication Register .......................................................... 51
Mode Register (0x09)................................................................. 51
Interrupt Status Register (0x0B), Reset Interrupt Status
Register (0x0C), Interrupt Enable Register (0x0A) ............... 53
CH1OS Register (0x0D) ............................................................ 54
Outline Dimensions ....................................................................... 55
Ordering Guide .......................................................................... 55