Alternative Parts

  • ADE7858A
    ADE7858A

    Polyphase Multifunction Energy Metering IC With Per Phase Active And Reactive Powers

Overview

Features and Benefits

  • Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22 and IEC 62053-23
  • Compatible with 3-phase, 3 or 4 wire (delta or wye) and other 3-phase services
  • Supplies total (fundamental and harmonic) active/reactive/ apparent energy on each phase and on the overall system
  • Less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at 25°C
  • Less than 0.2% error in active and reactive energy over a dynamic range of 3000 to 1 at 25°C
  • Supports current transformer and di/dt current sensors
  • Less than 0.1% error in voltage and current rms over a dynamic range of 1000 to 1 at 25°C
  • See Data Sheet for additional features

Product Details

The ADE7858 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7858 incorporates second-order Σ-Δ ADCs, a digital integrator, reference circuitry, and all the signal processing required to perform total (fundamental and harmonic) active, reactive and apparent energy measurement, and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing.

The ADE7858 is suitable to measure active, reactive, and apparent energy in various 3-phase configurations, such as WYE or DELTA services, with both three and four wires. The ADE7858 provides system calibration features for each phase, that is, rms offset correction, phase calibration, and gain calibration. The CF1, CF2 and CF3 logic outputs provide a wide choice of power information: total active/reactive/apparent power or sum of current rms values.

The ADE7858 has waveform sample registers that allow access to all ADC outputs. The device also incorporates power quality measurements such as short duration low or high voltage detections, short duration high current variations, line voltage period measurement and angles between phase voltages and currents. Two serial interfaces can be used to communicate with the ADE7858: SPI or I2C while a dedicated high speed interface, HSDC (High Speed Data Capture) port, can be used in conjunction with I2C to provide access to the ADC outputs and real time power information. The ADE7858 has also two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred.

The ADE7858 is available in 40-lead LFCSP lead free package.

Product Categories

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (1)

Product Recommendations

ADE7858 Companion Parts

Recommended Digital Isolators

  • For a dual, bi-directional, 5kV, hot swap isolator: ADUM2250.
  • For a dual, bi-directional, 2.5kV, hot swap isolator: ADUM1250.

Recommended External References

  • For low drift, low noise, low power, low cost: ADR280.
  • For high precision, low dropout, 10mA output: ADR3412.

Recommended RS-485/RS-422 Data Transceivers

  • For low power, half duplex transceiver in 8-lead SOIC package: ADM487E.
  • For isolated full/half duplex transceiver with integrated transformer driver: ADM2487E.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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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.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.