ADE7858

Poly Phase Multifunction Energy Metering IC with per Phase Active and Reactive Powers
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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 Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Alternative Parts

Evaluation Kits

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Product Details

The ADE7878 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7878 incorporates seven ADCs, reference circuitry and all       signal processing required to perform total (fundamental and harmonic) active, reactive and apparent energy measurement, fundamental active and reactive energy measurement and rms calculations.


This documentation describes the ADE7878 evaluation kit hardware, firmware and software functionality. The evaluation board contains an ADE7878 and a LPC2368 microcontroller. The ADE7878 and its associated metering components are optically isolated from the microcontroller. The microcontroller communicates with the PC using a USB interface. Firmware updates can be loaded using one PC com port and a regular serial cable. The ADE7878 evaluation board and this documentation, together with the ADE7878 data sheet provide a complete evaluation platform for the ADE7878.


The evaluation board has been designed so that ADE7878 can be evaluated in an energy meter. Using appropriate current transducers, the evaluation board can be connected to a test bench or high voltage (240Vrms) test circuit. On-board resistor dividers networks provide the attenuation for the line voltages. This application note describes how the current transducers should be connected for the best performance. The evaluation board requires two external 3.3V power supplies and the appropriate current transducers.

Documentation

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Product Recommendations

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ADE7858 Companion Parts

Recommended Digital Isolators

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

Recommended External References

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

Recommended RS-485/RS-422 Data Transceivers

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

Design Resources

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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.

ADE7858 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Reviews

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Most Helpful Review

by le001
The sample request was processed very quickly. I've received it on time.- thanks

All Reviews

by le001, 9 Mar 14
ADE-sample
The sample request was processed very quickly. I've received it on time.- thanks
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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.