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ADE7762:  Polyphase Energy Metering IC with Phase Drop Indication

Product Details


The ADE7762 is a high accuracy polyphase electrical energy measurement IC. The ADE7762 specifications surpass the accuracy requirements as quoted in the IEC62053-21 standard.

The only analog circuitry used in the ADE7762 is in the analog-to-digital converters (ADCs) and reference circuit. All other signal processing (for example, multiplication, filtering, and summation) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.

The ADE7762 supplies average active power information on the low frequency outputs, F1 and F2. These logic outputs can be used to directly drive an electromechanical counter or to interface with a microcontroller (MCU). The CF logic output gives instantaneous active power information. This output is intended to be used for calibration purposes.

The ADE7762 includes a power supply monitoring circuit on the VDD pin. The ADE7762 remains inactive until the supply voltage on VDD reaches 4 V. If the supply falls below 4 V, the ADE7762 resets and no pulses are issued on F1, F2, and CF.

A multiple multiplexed logic output provides phase dropout per phase, reverse polarity per phase, and a phase sequence error. Internal phase matching circuitry ensures that the voltage and current channels are phase matched. An internal no load threshold ensures that the ADE7762 does not exhibit any creep when there is no load.

The ADE7762 is available in a 28-lead SOIC package.

FEATURES and BENEFITS

  • High accuracy supports 50 Hz/60 Hz IEC 62053-21
  • Less than 0.1% error over a dynamic range of 500 to 1
  • Compatible with 3-phase, 3-wire delta and 3-phase, 4-wire Wye configurations
  • Supplies average active power on the frequency outputs F1 and F2
  • High frequency output (CF) is intended for calibration and supplies instantaneous active power
  • Logic output REVP indicates a potential miswiring or negative power on the sum of all phases
  • Dropout indication for each phase on LED driver pins
  • Phase sequence error detection
  • Direct drive for electromechanical counters and 2-phase stepper motors (F1 and F2)
  • Proprietary ADCs and DSP provide high accuracy over large variations in environmental conditions and over time
  • On-chip power supply monitoring
  • On-chip creep protection (no load threshold)

Functional Block Diagram for ADE7762

Documentation

Title Content Type File Type
ADE7762: Polyphase Energy Metering IC with Phase Drop Indication Data Sheet (Rev 0, 08/2007) (pdf, 495 kB) Data Sheets PDF
AN-1334: Impact of Adding a Neutral Attenuation Network in a 3P4W Wye System  (pdf, 316 kB) Application Notes PDF
AN-641: A 3-Phase Power Meter Based on the ADE7752  (pdf, 495 kB) Application Notes PDF
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
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
The Hot 100 products of 2006
(EDN, 12/15/2006)
Product Reviews HTML
Energy Meter Chips
(Components in Electronics, 11/2006)
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
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

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADE7762 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADE7762ARWZ Status: Last Time Buy 28 ld SOIC - Wide 28 Ind Tube, 27 $7.05 $7.05 Y  Material Info PCN/PDN Purchase
ADE7762ARWZ-RL Status: Last Time Buy 28 ld SOIC - Wide 28 Ind Reel, 1000 $7.05 $7.05 Y  Material Info PCN/PDN 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.

ADE7762 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADE7762EBZ Status: Production Evaluation Board $253.00 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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