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ADE7762
(Rev.:Rev0)

Polyphase Energy Metering IC with Phase Drop Indication

Analog Devices 

ADE7762

TABLE OF CONTENTS

Features .............................................................................................. 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Functional Block Diagram .............................................................. 3

Specifications..................................................................................... 4

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

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

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

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 9

Test Circuit ...................................................................................... 10

Terminology .................................................................................... 11

Theory of Operation ...................................................................... 12

Power Factor Considerations.................................................... 12

Nonsinusoidal Voltage and Current ........................................ 13

Analog Inputs.................................................................................. 14

Current Channels ....................................................................... 14

Voltage Channels ........................................................................ 14

Typical Connection Diagrams ...................................................... 15

REVISION HISTORY

8/07—Revision 0: Initial Version

Current Channel Connection................................................... 15

Voltage Channel Connection.................................................... 15

Meter Connections..................................................................... 15

Power Supply Monitor ................................................................... 17

Phase Monitor................................................................................. 18

Phase Dropout Error.................................................................. 18

Phase Sequence Error ................................................................ 18

Phase Reverse Polarity Detection............................................. 18

HPF and Offset Effects .................................................................. 20

Digital-to-Frequency Conversion ................................................ 21

Accumulation of 3-Phase Power .............................................. 22

Transfer Function ........................................................................... 23

Frequency Outputs F1 and F2 .................................................. 23

Frequency Output CF ................................................................ 24

Selecting a Frequency for an Energy Meter Application........... 25

Frequency Outputs..................................................................... 25

No-Load Threshold.................................................................... 26

Outline Dimensions ....................................................................... 27

Ordering Guide .......................................................................... 27

Rev. 0 | Page 2 of 28

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