The ADE7868 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7868 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 ADE7868 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 ADE7868 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 ADE7868 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 ADE7868: 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 ADE7868 has also two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred. Three specially designed low power modes ensure the continuity of the energy accumulation when the ADE7868 is in tampering situation. The ADE7868 is available in 40-lead LFCSP lead free package.
|Title||Content Type||File Type|
ADE7854/ADE7858/ADE7868/ADE7878: Polyphase Multifunction Energy Metering IC with Harmonic and Fundamental Information Data Sheet (Rev H, 04/2014) (pdf, 1046 kB)
|AN-1272: Differences Between the ADE7854A/ADE7858A/ADE7868A/ADE7878A and ADE7854/ADE7858/ADE7868/ADE7878 Products (pdf, 230 kB)||Application Notes|
|AN-1076: Calibrating an ADE7878-Based, 3-Phase Energy Meter (pdf, 221 kB)||Application Notes|
|AN-639: Frequently Asked Questions (FAQs) Analog Devices Energy (ADE) Products (pdf, 165 kB)||Application Notes|
|UG-146: Evaluating the ADE7878 Energy Metering IC (pdf, 1915 kB)||User Guides|
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)
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)
RF Meets Power Lines: Designing Intelligent Smart Grid Systems that Promote Energy Efficiency
RF DesignLine, March 2010
|Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4 (pdf, 1496 kB)||Solutions Bulletins|
|ADE78xx Polyphase Multifunction Energy Metering ICs (pdf, 1847 kB)||Overview|
|What are the benefits of the ADE energy metering devices?||FAQs/RAQs||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
Recommended External References for the ADE7868
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