ADE7878

NOT RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. H) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Overview

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

Less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at T_A = 25°C
Less than 0.2% error in active and reactive energy over a dynamic range of 3000 to 1 at T_A = 25°C
Supports current transformer and di/dt current sensors
See data sheet for additional features

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

Part Models: 2
1ku List Price: price unavailable

Documentation

Frequently Asked Question 1

FAQ 09/05/2025

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 Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADE7878ACPZ	40-Lead LFCSP (6mm x 6mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADE7878ACPZ-RL	40-Lead LFCSP (6mm x 6mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 6, 2014 - 14_0135 Assembly and Test Transfer of AD7173-8, AD7175-8 in 6x6 mm and ADP5051, ADP5053 in 7x7 mm LFCSP to StatsChipPac China
		PCN14_0135_Form Material_Report Detailed Change Description Qualification Results Summary Test Correlation Report
ADE7878ACPZ
ADE7878ACPZ-RL
Nov 12, 2013 - 13_0232 Assembly and Test Transfer of Select 6x6 and 7x7mm LFCSP Products to STATS ChipPAC China
		PCN13_0232_Form Material_Report Detailed Change Description Qualification Plan Summary Test Correlation Plan
ADE7878ACPZ
ADE7878ACPZ-RL
Oct 28, 2013 - 13_0117 Mask Change for ADE7878, ADE7868, ADE7858 and ADE7854 and Datasheet Update
		PCN13_0117_Form Material_Report Qualification Report Summary
ADE7878ACPZ
ADE7878ACPZ-RL
Sep 18, 2012 - 12_0148 Minor Metal Mask Revision and Data Sheet Change for ADE7878, ADE7868, ADE7858 and ADE7854
		PCN12_0148_Form Material_Report
ADE7878ACPZ
ADE7878ACPZ-RL
Nov 15, 2010 - 10_0238 Die Revision and Datasheet Changes for ADE7854, ADE7858, ADE7868, ADE7878 Products
		PCN10_0238_Form Material_Report Qualification Plan Summary
ADE7878ACPZ
ADE7878ACPZ-RL

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Interface Transceivers & Isolators 4
ADM487E	PRODUCTION	5 V, ±15 kV ESD Protected, Half Duplex RS-485/RS-422 Transceiver (250 kbps, ¼ Load)
ADuM2250	PRODUCTION	Hot-Swappable Dual I²C^® Isolators, 5 kV
ADM2487E	PRODUCTION	2.5 kV Signal Isolated, ESD Protected, Full/Half Duplex RS-485 Transceiver w/ Transformer Driver (500 kbps)
ADUM1250	PRODUCTION	Hot Swappable Dual I²C Isolator

Voltage References 2
ADR3412	PRODUCTION	Micro-Power, High-Accuracy 1.2V Voltage Reference.
ADR280	PRODUCTION	1.2 V Ultralow Power High PSRR Voltage Reference

Parts	Product Life Cycle	Description
ADE7878A	PRODUCTION	Polyphase Multifunction Energy Metering IC With Per Phase Active And Reactive Powers

Evaluation Kits

ADE7878 Evaluation Board

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Features and Benefits

EVAL-ADE7878EBZ can be used for the evaluation of the following:

ADE7878, ADE7868, ADE7858, ADE7854, family of parts.
The UG-146 User Guide describes the ADE7878 evaluation kit hardware, firmware, and software functionality.
Evaluation board designed to be used together with accompanying software to implement a fully functional three-phase energy meter.
Easy connection of various external transducers via screw terminals.
Easy modification of signal conditioning components using PCB sockets.
LED indicators on logic outputs CF1, CF2, CF3, IRQ0, and IRQ.
Optically isolated metering components and USB based communication with PC.
External voltage reference option available for on-chip reference evaluation.
PC COM port-based firmware updates.

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.