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ADE7768:  Single Phase Energy Metering IC with Integrated Oscillator and Positive Only Accumulation

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Статус продукта:Производство

The ADE7768 is an accurate electrical energy measurement integrated circuit. It is a pin reduction version of ADE7755 with an enhancement of a precise oscillator circuit that serves as a clock source to the chip. The ADE7768 eliminates the cost of an external crystal or resonator, thus reducing the overall cost of a meter built with this IC. The chip directly interfaces with shunt resistor.

The ADE7768 provides instantaneous and average real power based on line current and voltage, and only accumulates when the power is positive – ignoring negative power. The part specifications surpass the accuracy requirements as quoted in the IEC61036 standard. The only analog circuitry used in the ADE7768 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 small analog input full-scale allows the chip to interface to low value shunt resistances without losing dynamic range. The ADE7768 is available in 16-lead SOIC narrow-body package.

The Application Note AN-679 can be used as a basis for a description of an IEC61036 low cost, watt-hour meter reference design.

NOTE: For polyphase system designs, the ADE7752B is recommended.

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

  • Exceeds IEC61036/60687
  • Less than 0.1% Active Energy Error Over Dynamic Range of 500:1
  • Active Energy Measurement
  • High Frequency Pulse Output
  • Current sensor interface for current transformers or shunts
  • On-chip Temperature Sensor and Voltage Reference (2.5 V)
  • Low Power (20 mW typical)
  • Reverse Power Indication (REVP)

Functional Block Diagram for ADE7768

Документация

Наименование Тип контента Тип файлов
ADE7768: Energy Metering IC with Integrated Oscillator and Positive Power Accumulation Data Sheet (Rev A, 11/2005) (pdf, 398 kB) Технические описания 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)
Рекомендуем к прочтению PDF
All-Electronic Power and Energy Meters
(Analog Dialogue, Vol. 33, No. 2, February, 1999)
Журнал Analog Dialogue HTML
Smart Metering Technology Promotes Energy Efficiency for a Greener World
Analog Dialogue, Volume 43 – January 2009
Журнал 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)
Технические статьи 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)
Технические статьи PDF
RF Meets Power Lines: Designing Intelligent Smart Grid Systems that Promote Energy Efficiency
RF DesignLine, March 2010
Технические статьи HTML
Smart Metering Technology Promotes Energy Efficiency for a Greener World
Analog Dialogue, Volume 43 – January 2009
Технические статьи HTML
The Hot 100 products of 2006
(EDN, 12/15/2006)
Обзоры продукции HTML
Energy Meter Chips
(Components in Electronics, 11/2006)
Обзоры продукции HTML
Energy Measurement Solutions  (pdf, 2002 kB) Обзор 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.
Обзор 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
Словарь терминов Глоссарий HTML

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