Datasheet ADE7761B (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Energy Metering IC with On-Chip Fault and Missing Neutral Detection |
| Pages / Page | 24 / 2 — ADE7761B. TABLE OF CONTENTS. REVISION HISTORY. 8/07—Revision 0: Initial … |
| File Format / Size | PDF / 535 Kb |
| Document Language | English |
ADE7761B. TABLE OF CONTENTS. REVISION HISTORY. 8/07—Revision 0: Initial Version
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ADE7761B TABLE OF CONTENTS
Features .. 1 Analog Inputs ... 11 General Description ... 1 Internal Oscillator .. 12 Functional Block Diagram .. 1 Analog-to-Digital Conversion.. 13 Revision History ... 2 Active Power Calculation .. 14 Specifications... 3 Digital-to-Frequency Conversion .. 16 Timing Characteristics .. 4 Transfer Function... 16 Absolute Maximum Ratings.. 5 Fault Detection ... 17 Performance Issues That May Affect Billing Accuracy... 5 Missing Neutral Mode ... 18 ESD Caution.. 5 Applications Information .. 21 Pin Configuration and Function Descriptions... 6 Interfacing to a Microcontroller for Energy Measurement .. 21 Typical Performance Characteristics ... 8 Selecting a Frequency for an Energy Meter Application .. 21 Test Circuit .. 9 Negative Power Information... 22 Terminology .. 10 Outline Dimensions ... 23 Theory of Operation .. 11 Ordering Guide .. 23 Power Supply Monitor ... 11
REVISION HISTORY 8/07—Revision 0: Initial Version
Rev. 0 | Page 2 of 24 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS Timing Diagram ABSOLUTE MAXIMUM RATINGS PERFORMANCE ISSUES THAT MAY AFFECT BILLING ACCURACY Case 1 Case 2 ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUIT TERMINOLOGY THEORY OF OPERATION POWER SUPPLY MONITOR ANALOG INPUTS Channel V1 (Current Channel) Channel V2 (Voltage Channel) MISCAL Input Typical Connection Diagrams INTERNAL OSCILLATOR ANALOG-TO-DIGITAL CONVERSION Antialias Filter ACTIVE POWER CALCULATION Power Factor Considerations Nonsinusoidal Voltage and Current HPF and Offset Effects DIGITAL-TO-FREQUENCY CONVERSION TRANSFER FUNCTION Frequency Output F1 and Frequency Output F2 Frequency Output CF FAULT DETECTION Fault with Active Input Greater Than Inactive Input Fault with Inactive Input Greater Than Active Input Calibration Concerns MISSING NEUTRAL MODE Important Note for Billing of Active Energy Missing Neutral Detection Missing Neutral Gain Calibration APPLICATIONS INFORMATION INTERFACING TO A MICROCONTROLLER FOR ENERGY MEASUREMENT SELECTING A FREQUENCY FOR AN ENERGY METER APPLICATION Frequency Outputs No-Load Threshold NEGATIVE POWER INFORMATION OUTLINE DIMENSIONS ORDERING GUIDE
ADE7761B TABLE OF CONTENTS
Features .. 1 Analog Inputs ... 11 General Description ... 1 Internal Oscillator .. 12 Functional Block Diagram .. 1 Analog-to-Digital Conversion.. 13 Revision History ... 2 Active Power Calculation .. 14 Specifications... 3 Digital-to-Frequency Conversion .. 16 Timing Characteristics .. 4 Transfer Function... 16 Absolute Maximum Ratings.. 5 Fault Detection ... 17 Performance Issues That May Affect Billing Accuracy... 5 Missing Neutral Mode ... 18 ESD Caution.. 5 Applications Information .. 21 Pin Configuration and Function Descriptions... 6 Interfacing to a Microcontroller for Energy Measurement .. 21 Typical Performance Characteristics ... 8 Selecting a Frequency for an Energy Meter Application .. 21 Test Circuit .. 9 Negative Power Information... 22 Terminology .. 10 Outline Dimensions ... 23 Theory of Operation .. 11 Ordering Guide .. 23 Power Supply Monitor ... 11
REVISION HISTORY 8/07—Revision 0: Initial Version
Rev. 0 | Page 2 of 24 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS Timing Diagram ABSOLUTE MAXIMUM RATINGS PERFORMANCE ISSUES THAT MAY AFFECT BILLING ACCURACY Case 1 Case 2 ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUIT TERMINOLOGY THEORY OF OPERATION POWER SUPPLY MONITOR ANALOG INPUTS Channel V1 (Current Channel) Channel V2 (Voltage Channel) MISCAL Input Typical Connection Diagrams INTERNAL OSCILLATOR ANALOG-TO-DIGITAL CONVERSION Antialias Filter ACTIVE POWER CALCULATION Power Factor Considerations Nonsinusoidal Voltage and Current HPF and Offset Effects DIGITAL-TO-FREQUENCY CONVERSION TRANSFER FUNCTION Frequency Output F1 and Frequency Output F2 Frequency Output CF FAULT DETECTION Fault with Active Input Greater Than Inactive Input Fault with Inactive Input Greater Than Active Input Calibration Concerns MISSING NEUTRAL MODE Important Note for Billing of Active Energy Missing Neutral Detection Missing Neutral Gain Calibration APPLICATIONS INFORMATION INTERFACING TO A MICROCONTROLLER FOR ENERGY MEASUREMENT SELECTING A FREQUENCY FOR AN ENERGY METER APPLICATION Frequency Outputs No-Load Threshold NEGATIVE POWER INFORMATION OUTLINE DIMENSIONS ORDERING GUIDE
