The ADE7880 is high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7880 device incorporates second-order sigma-delta (Σ-Δ) analog-to-digital converters (ADCs), a digital integrator, reference circuitry, and all of the signal processing required to perform the total (fundamental and harmonic) active, and apparent energy measurements, rms calculations, as well as fundamental-only active and reactive energy measurements. In addition, the ADE7880 computes the rms of harmonics on the phase and neutral currents and on the phase voltages, together with the active, reactive and apparent powers, and the power factor and harmonic distortion on each harmonic for all phases. Total harmonic distortion plus noise (THD + N) is computed for all currents and voltages. A fixed function digital signal processor (DSP) executes this signal processing. The DSP program is stored in the internal ROM memory.
The ADE7880 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 ADE7880 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 powers, apparent powers, or the sum of the current rms values, and fundamental active and reactive powers.
The ADE7880 contains waveform sample registers that allow access to all ADC outputs. The devices also incorporate 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 ADE7880. 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 ADE7880 also has 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 energy accumulation when the ADE7880 is in a tampering situation. The ADE7880 is available in the 40-lead LFCSP, Pb-free package, pin-for-pin compatible with ADE7854, ADE7858, ADE7868, and ADE7878 devices.
|Title||Content Type||File Type|
|ADE7880: Polyphase Multifunction Energy Metering IC with Harmonic Monitoring Data Sheet (Rev A, 03/2012) (pdf, 3025 kB)||Data Sheets|
|AN-1171: Calibrating a Three-Phase Energy Meter Based on the ADE7880 (pdf, 237 kB)||Application Notes|
|AN-1127: Differences Between the ADE7880 and the ADE7878 (pdf, 103 kB)||Application Notes|
|AN-639: Frequently Asked Questions (FAQs) Analog Devices Energy (ADE) Products (pdf, 165 kB)||Application Notes|
|UG-356: Evaluating the ADE7880 Energy Metering IC (pdf)||User Guides|
|MS-2250: Adaptive Real-Time DSP Architecture to Monitor Harmonic Components and Various Power Quality Factors in Electric Power Grids (pdf, 540 kB)||Technical Articles|
|ADE7880Polyphase Energy Metering IC Includes High Accuracy Harmonic Analysis (pdf, 1559 kB)||Overview|
|Glossary of EE Terms||Glossary||HTML|
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