ADE7878
Polyphase Multifunction Energy Metering IC with per Phase Active and Reactive Powers
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Overview
Features and Benefits
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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 second-order sigma-delta (Σ-Δ) analog-to-digital converters (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, as well as fundamental only active and reactive energy measurement and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing. The DSP program is stored into internal ROM memory.
The ADE7878 is suitable for measuring active, reactive, and apparent energy in various 3-phase configurations, such as wye or delta services, with both three and four wires. The ADE7878 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, and apparent powers, or the sum of the current rms values, and fundamental active and reactive powers.
The ADE7878 contains 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, SPI and I2C, can be used to communicate with the ADE7878. A dedicated high speed interface, the high speed data capture (HSDC) port, can be used in conjunction with I2C to provide access to the ADC outputs and real-time power information. The ADE7878 also has two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred. For the ADE7878, three specially designed low power modes ensure the continuity of energy accumulation when the ADE7878 is in a tampering situation.
The ADE7878 is available in a 40-lead LFCSP, Pb-free package.
Applications
- Energy metering systems
Product Categories
Product Lifecycle
Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Evaluation Kits (1)
Documentation & Resources
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Differences Between the ADE7854A/ADE7858A/ADE7868A/ADE7878A and ADE7854/ADE7858/ADE7868/ADE7878 Products (Rev. AN-1272)3/22/2019
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AN-1334: Impact of Adding a Neutral Attenuation Network in a 3P4W Wye System (Rev. 0)1/19/2016
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AN-1127: Differences Between the ADE7880 and the ADE7878 (Rev. A)11/4/2011
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AN-1076: Calibrating an ADE7878-Based, 3-Phase Energy Meter (Rev. 0)6/25/2010
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AN-639: Frequently Asked Questions (FAQs) Analog Devices Energy (ADE) Products (Rev. A)8/17/2005
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FAQs7/26/2017
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RF Meets Power Lines: Designing Intelligent Smart Grid Systems that Promote Energy Efficiency3/5/2010
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Key Features of ADE7878 Polyphase Energy Metering IC1/1/2009
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IC Technology and Failure Mechanisms - Understanding Reliability Standards Can Raise Quality of Meters6/1/2004
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Measuring Harmonic Energy with a Solid State Energy Meter9/30/2003
Product Recommendations
ADE7878 Companion Parts
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.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADE7878ACPZ | Material Declaration | Reliability Data | 40-Lead LFCSP (6mm x 6mm w/ EP) | |
| ADE7878ACPZ-RL | Material Declaration | Reliability Data | 40-Lead LFCSP (6mm x 6mm w/ EP) | |
| Wafer Fabrication Data |
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Evaluation Boards
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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.