ADE7854

NOT RECOMMENDED FOR NEW DESIGNS

Polyphase Multifunction Energy Metering IC

Data Sheet (Rev. H)

Part Models: 2
1ku List Price: price unavailable

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Part Details

Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23
Compatible with 3-phase, 3- or 4-wire (delta or wye), and other 3-phase services
<0.1% error in active energy over a dynamic range of 1000:1 at 25°C

<0.2% error in active energy over a dynamic range of 3000:1 at 25°C
Supports current transformer and di/dt current sensors
<0.1% error in voltage and current rms over a dynamic range of 1000:1 at 25°C
Please see data sheet for additional features.

Part Models: 2
1ku List Price: price unavailable

Software Resources

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Hardware Ecosystem

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

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
ADE7854A	PRODUCTION	Polyphase Multifunction Energy Metering IC

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.