ADE7761B

Rev. 0 | Page 2 of 24

TABLE OF CONTENTS

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

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

Functional Block Diagram .............................................................. 1

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

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

Timing Characteristics ................................................................ 4

Absolute Maximum Ratings............................................................ 5

Performance Issues That May Affect Billing Accuracy........... 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 8

Test Circuit ........................................................................................ 9

Terminology .................................................................................... 10

Theory of Operation ...................................................................... 11

Power Supply Monitor ............................................................... 11

Analog Inputs ............................................................................. 11

Internal Oscillator ...................................................................... 12

Analog-to-Digital Conversion.................................................. 13

Active Power Calculation .......................................................... 14

Digital-to-Frequency Conversion ............................................ 16

Transfer Function....................................................................... 16

Fault Detection ........................................................................... 17

Missing Neutral Mode ............................................................... 18

Applications Information .............................................................. 21

Interfacing to a Microcontroller for Energy Measurement .. 21

Selecting a Frequency for an Energy Meter Application ...... 21

Negative Power Information..................................................... 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

REVISION HISTORY

8/07—Revision 0: Initial Version