ADE7753ARSZ datasheet(2/60 Pages) AD

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ADE7753

Rev. C | Page 2 of 60

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 ...................................................................... 16

Analog Inputs.............................................................................. 16

di/dt Current Sensor and Digital Integrator............................... 17

Zero-Crossing Detection........................................................... 18

Period Measurement .................................................................. 19

Power Supply Monitor ............................................................... 19

Line Voltage Sag Detection ....................................................... 19

Peak Detection ............................................................................ 20

ADE7753 Interrupts................................................................... 21

Temperature Measurement ....................................................... 22

ADE7753 Analog-to-Digital Conversion................................ 22

Channel 1 ADC .......................................................................... 23

Channel 2 ADC .......................................................................... 25

Phase Compensation.................................................................. 27

Active Power Calculation .......................................................... 28

Energy Calculation..................................................................... 29

Power Offset Calibration........................................................... 31

Energy-to-Frequency Conversion............................................ 31

Line Cycle Energy Accumulation Mode ................................. 33

Positive-Only Accumulation Mode ......................................... 33

No-Load Threshold.................................................................... 33

Reactive Power Calculation ...................................................... 33

Sign of Reactive Power Calculation ......................................... 35

Apparent Power Calculation..................................................... 35

Apparent Energy Calculation ................................................... 36

Line Apparent Energy Accumulation...................................... 37

Energies Scaling.......................................................................... 38

Calibrating an Energy Meter Based on the ADE7753........... 38

CLKIN Frequency ...................................................................... 48

Suspending ADE7753 Functionality ....................................... 48

Checksum Register..................................................................... 48

ADE7753 Serial Interface.......................................................... 49

ADE7753 Registers......................................................................... 52

ADE7753 Register Descriptions................................................... 55

Communications Register......................................................... 55

Mode Register (0x09)................................................................. 55

Interrupt Status Register (0x0B), Reset Interrupt Status

CH1OS Register (0x0D)............................................................ 58

Outline Dimensions ....................................................................... 59

Ordering Guide .......................................................................... 59

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