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ADE7753
(Rev.:RevA)

Single-Phase Multifunction Metering IC with di/dt Sensor Interface

Analog Devices 

ADE7753

TABLE OF CONTENTS

Specifications..................................................................................... 3

Timing Characteristics..................................................................... 5

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Terminology ...................................................................................... 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ........................................... 10

Theory of Operation ...................................................................... 15

Analog Inputs.............................................................................. 15

di/dt Current Sensor and Digital Integrator ........................... 16

Zero-Crossing Detection........................................................... 17

Period Measurement .................................................................. 18

Power Supply Monitor ............................................................... 18

Line Voltage Sag Detection........................................................ 18

Peak Detection ............................................................................ 19

ADE7753 Interrupts................................................................... 20

Temperature Measurement ....................................................... 21

ADE7753 Analog-to-Digital Conversion................................ 21

Channel 1 ADC........................................................................... 22

Channel 2 ADC........................................................................... 24

Phase Compensation.................................................................. 26

Active Power Calculation .......................................................... 27

Energy Calculation..................................................................... 28

Power Offset Calibration ........................................................... 30

REVISION HISTORY

6/04—Changed from Rev. 0 to Rev A

Changes IEC Standards ................................................................... 1

Changes to Phase Error Between Channels Definition............... 7

Changes to Figure 24...................................................................... 13

Changes to CH2OS Register ......................................................... 16

Change to the Period Measurement Section............................... 18

Change to Temperature Measurement Section .......................... 21

Changes to Figure 69...................................................................... 31

Energy-to-Frequency Conversion ........................................... 30

Line Cycle Energy Accumulation Mode ................................. 32

Positive-Only Accumulation Mode ......................................... 32

No-Load Threshold.................................................................... 32

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

Sign of Reactive Power Calculation ......................................... 34

Apparent Power Calculation..................................................... 34

Apparent Energy Calculation ................................................... 35

Line Apparent Energy Accumulation ...................................... 36

Energies Scaling.......................................................................... 37

Calibrating an Energy Meter Based on the ADE7753........... 37

CLKIN Frequency ...................................................................... 47

Suspending ADE7753 Functionality........................................ 47

Checksum Register..................................................................... 47

ADE7753 Serial Interface.......................................................... 48

ADE7753 Registers......................................................................... 51

ADE7753 Register Descriptions................................................... 54

Communications Register......................................................... 54

Mode Register (0x09)................................................................. 54

Interrupt Status Register (0x0B), Reset Interrupt Status

Register (0x0C), Interrupt Enable Register (0x0A) ............... 56

CH1OS Register (0x0D)............................................................ 57

Outline Dimensions ....................................................................... 58

Ordering Guide .......................................................................... 58

Changes to Figure 71...................................................................... 33

Changes to the Apparent Energy Section.................................... 36

Changes to Energies Scaling Section ........................................... 37

Changes to Calibration Section .................................................... 37

8/03—Revision 0: Initial Version

Rev. A | Page 2 of 60

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