ADE7878 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADE7878
Manufacturer

ADI
ChipWorker Part#

CW181926446
RoHS

Lead free / RoHS Compliant
Description

Polyphase Multifunction Energy Metering IC with per Phase Active and Reactive Powers
Documentation

Datasheet

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ADE7878 Specifications

Attribute	Attribute Value

Part Number	ADE7878
Manufacturer	ADI
ChipWorker Part#	CW181926446
Documentation	Datasheet
	expand all
Product Lifecycle Status	Active
RoHS	RoHS Compliant

Product Description

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
### Features and Benefits
Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22 and IEC 62053-23 standards
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 and fundamental active/reactive energy on each phase and on the overall system
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Less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at TA = 25°C
Less than 0.2% error in active and reactive energy over a dynamic range of 3000 to 1 at TA = 25°C
Supports current transformer and di/dt current sensors
See data sheet for additional features
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