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ADE7751:  Single Phase Energy Metering IC with On-Chip Fault Detection

Product Details


The ADE7751 is an accurate fault tolerant electrical energy measurement IC intended for use in two-wire distribution systems. It provides instantaneous and average real power based on line voltage and current. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. The only analog circuitry used on the ADE7751 is in the ADCs and reference circuit. All other signal processing (e.g., multiplication and filtering) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.

The ADE7751 incorporates a novel fault detection scheme, which both warns of fault conditions and allows the ADE7751 to continue accurate billing during a fault event. The ADE7751 does this by continuously monitoring both the phase and neutral (return) currents. A fault is indicated when these currents differ by more than 12.5%, and billing is continued using the larger of the two currents. Gain calibration between channels is adjusted external to this device. The ADE7751, available in SSOP packages, is pin compatible with the AD7751. It has the same functionalities as the AD7751. The only difference is that its low frequency (F1/F2) and high frequency (CF) outputs are synchronized under all load conditions.

FEATURES and BENEFITS

  • Exceeds IEC61036 with less than 0.1% active energy error over dynamic range of 500:1 at 25ºC
  • Continuous monitoring of Phase and Neutral
  • Fault and Reverse Power Outputs Indicate Potential Miswiring
  • Pulse Output for Direct Interface to Stepper Motor Counter
  • Additional High Frequency Pulse Output for Fast Calibration
  • On chip Voltage Reference (2.4 V)
  • Low Power (15 mW typical)

Functional Block Diagram for ADE7751

Of Note ...

You may notice that Evaluation Tools, Application Notes and other supporting documents may refer to the AD7751. This material is still applicable to the ADE7751 because of the similarity between the two products.

Documentation

Title Content Type File Type
ADE7751: Energy Metering IC With On-Chip Fault Detection Data Sheet  (Rev 0, 05/2002) (pdf, 422 kB) Data Sheets PDF
AN-563: A Tamper-Resistant Watt-Hour Energy Meter  (pdf, 348 kB)
Based on the ADE7751 and Two Current Sensors
Application Notes PDF
AN-639: Frequently Asked Questions (FAQs) Analog Devices Energy (ADE) Products  (pdf, 165 kB) Application Notes PDF
AN-574: A Tamper-Resistant Watt-Hour Energy Meter Based on the AD7751  (pdf, 625 kB)
With a Current Transformer and a Low Resistant Shunt
Application Notes PDF
Utility Automation Magazine Recommended Reading HTML
Meter Background
  • Power Theory  (pdf, 386 kB)
    Definition Of Power/Energy, Power Calculations and Theory Behind ADE775x Power Calculations
  • Meter Configurations  (pdf, 888 kB)
    Wiring Standards, Tampering/Anti-Tampering Connections, Single Phase Stepper Motor and Microprocessor-Based Meters
  • Current Sensors  (pdf, 950 kB)
  • PCB Design  (pdf, 1603 kB)
Recommended Reading HTML
Electrical World Recommended Reading HTML
Meter Architecture Trade-offs  (pdf, 1056 kB)
Single-Chip versus Multi-Chip Solutions and Examples of Implementation with Single-Chip Metering IC (Watt-Only and Multi-Function)
Recommended Reading PDF
Utility Products Showcase Recommended Reading HTML
PCIM Power Electronic Systems Recommended Reading HTML
Power Engineering Recommended Reading HTML
Sensors World Link Recommended Reading HTML
Metering International Recommended Reading HTML
Independent Energy Online Recommended Reading HTML
All-Electronic Power and Energy Meters
(Analog Dialogue, Vol. 33, No. 2, February, 1999)
Analog Dialogue HTML
Smart Metering Technology Promotes Energy Efficiency for a Greener World
Analog Dialogue, Volume 43 – January 2009
Analog Dialogue HTML
Measuring Harmonic Energy with a Solid State Energy Meter  (pdf, 46 kB)
(Reprinted with permission from Metering International where it was first printed in Issue 3, 2003)
Technical Articles PDF
IC Technology and Failure Mechanisms - Understanding Reliability Standards Can Raise Quality of Meters  (pdf, 903 kB)
by Etienne Moulin, Analog Devices, Inc. (Reprinted with permission of India's Power Magazine, PowerLine, where it first appeared in the June 2004 issue)
Technical Articles PDF
RF Meets Power Lines: Designing Intelligent Smart Grid Systems that Promote Energy Efficiency
RF DesignLine, March 2010
Technical Articles HTML
Smart Metering Technology Promotes Energy Efficiency for a Greener World
Analog Dialogue, Volume 43 – January 2009
Technical Articles HTML
Tapping The Potential Of Electronic Energy Metering  (pdf, 63 kB)
by Rachel Kaplan, Analog Devices, Inc. ... Today's homes seem more modern than ever, with knobs and dials re-placed by buttons and digital displays. But outside, electricity meters use electromechanical Ferraris technology developed 100 years ago.
(The article originally appeared in Electronic Design's November 25, 2002 Analog & Power Vision Supplement)
Technical Articles PDF
Trusting Integrated Circuits in Metering Applications  (pdf, 15 kB)
by Jared Jones, Analog Devices, Inc. (Published by and reprinted with permission of Metering International. The Chinese version of this article is published in the February 2003 Metering International, China Special Edition.)
Technical Articles PDF
Digital Energy Meters by the Millions  (pdf, 85 kB)
by Paul Daigle, Analog Devices, Inc.
(Reprinted with permission of Utility Automation, where it was first published in 4/2000)
Technical Articles PDF
Measuring Reactive Power in Energy Meters  (pdf, 425 kB)
(Reprinted with permission from Metering International where it first appeared in Issue 1, 2002)
Technical Articles PDF
Theft Resistant Energy Meters  (pdf, 17 kB)
(Reprinted with permission of Metering International, where it first appeared in Issue 2 of 1999)
Technical Articles PDF
Solid State Solutions For Electricity Metrology  (pdf, 67 kB)
Significant changes are taking place in the electric energy industry worldwide. Deregulation of the utilities will produce a tougher competitive environment for the suppliers of electricity. Increased demand for electrical energy will require better management of distribution. Suppliers will need to identify ways of supplying a better level of service at a reduced cost. One way to do this is to install a solid state electricity meter.
Technical Articles PDF
How Solid Is Your Solid-State Energy Meter? Not All Ics Are Created Equal.  (pdf, 206 kB)
(Reprinted with permission from Metering International where it was first printed in Issue 4, 2000)
Technical Articles PDF
Energy Information Administration Associations & Standards HTML
Energy Efficient and Renewable Energy Network Associations & Standards HTML
Edison Electric Institute Associations & Standards HTML
Electric Power Research Institute Associations & Standards HTML
American Council for an Energy-Efficient Economy Associations & Standards HTML
Utility Industry Group Associations & Standards HTML
International Engineering Consortium Associations & Standards HTML
New South Wales Wholesale State Electricity Market Associations & Standards HTML
National Electrical Mfg Assoc. Associations & Standards HTML
National Association of Regulatory Utility Commissioners Associations & Standards HTML
The Business Council for Sustainable Energy Associations & Standards HTML
California Public Utilities Commission Associations & Standards HTML
I.E.E.E Power Engineering Society Associations & Standards HTML
American National Standards Institute Associations & Standards HTML
United Telecom Council Associations & Standards HTML
U.S. Department of Energy's Home Page Associations & Standards HTML
American Public Power Association Associations & Standards HTML
The Energy Foundation Associations & Standards HTML
ADE7751: Energy Metering ICs... Quality you can trust  (pdf, 395 kB) Quality Assurance PDF
Energy Meter Chips
(Components in Electronics, 11/2006)
Product Reviews HTML
The Hot 100 products of 2006
(EDN, 12/15/2006)
Product Reviews HTML
Energy Measurement Solutions  (pdf, 2002 kB) Overview PDF
ADE Product Family Overview  (pdf, 1390 kB)
The portfolio includes single-phase products and polyphase products for stepper motor and LCD display meter designs, with five critical measurements available: watt, V rms, I rms, VA, and VAR.
Overview PDF
Analog ICs that meter an energy-sensitive world. Overview HTML
What are the benefits of the ADE energy metering devices? FAQs/RAQs HTML
Frequently Asked Questions (FAQs): Analog Devices Energy (ADE) Products  (pdf, 656 kB) FAQs/RAQs PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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Price, packaging, availability

ADE7751 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADE7751ARSRL Status: Obsolete 24 ld SSOP 24 Ind Reel, 1500 - - N  Material Info PCN Contact ADI
ADE7751ARSZ Status: Production 24 ld SSOP 24 Ind Tube, 59 $1.64 $1.64 Y  Material Info PCN Purchase Sample
ADE7751ARSZRL Status: Production 24 ld SSOP 24 Ind Reel, 1500 - $1.64 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADE7751 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADE7751ZEB Status: Production Evaluation Board $168.67 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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