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Evaluation Board User Guide
UG-356
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluating the ADE7880 Energy Metering IC
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 56
FEATURES
Evaluation board designed to be used with accompanying
software to implement a fully functional 3-phase energy
meter
Easy connection of external transducers via screw terminals
Easy modification of signal conditioning components using
PCB sockets
LED indicators on the CF1, CF2, CF3, IRQ0, and IRQ1 logic
outputs
Optically isolated metering components and USB-based
communication with a PC
External voltage reference option available for on-chip
reference evaluation
PC COM port-based firmware updates
GENERAL DESCRIPTION
The ADE7880 is a 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,
and 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, the
power factor and harmonic distortion on each harmonic for all
phases. Total harmonic distortion (THD) is computed for all
currents and voltages. This user guide describes the ADE7880
evaluation kit hardware, firmware, and software functionality.
The evaluation board contains an ADE7880 and an LPC2368
microcontroller (from NXP Semiconductors). The ADE7880
and its associated metering components are optically isolated
from the microcontroller. The microcontroller communicates
with the PC using a USB interface.
The ADE7880 evaluation board and this user guide, together
with the ADE7880 data sheet, provide a complete evaluation
platform for the ADE7880.
The evaluation board has been designed so that the ADE7880
can be evaluated as an energy meter. Using appropriate current
transducers, the evaluation board can be connected to a test
bench or high voltage (240 V rms) test circuit. On-board
resistor divider networks provide the attenuation for the line
voltages. This user guide describes how the current transducers
should be connected for the best performance. The evaluation
board requires two power supplies, one external supply of 3.3 V
and one supply provided by connecting a USB cable between a
PC and the board. Appropriate current transducers are also
required.
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