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Sheet目录1214

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Polyphase Multifunction Energy Metering IC

with Harmonic Monitoring

Data Sheet

FEATURES

Highly accurate; supports IEC 62053-21, IEC 62053-22,

IEC 62053-23, EN 50470-1, EN 50470-3, ANSI C12.20, and

IEEE1459 standards

Supports IEC 61000-4-7 Class I and Class II accuracy

specification

Compatible with 3-phase, 3- or 4-wire (delta or wye), and

other 3-phase services

Supplies rms, active, reactive and apparent powers, power

factor, THD, and harmonic distortion of all harmonics

within 2.8 kHz pass band on all phases

Supplies rms and harmonic distortions of all harmonics

within 2.8 kHz pass band on neutral current

Less than 1% error in harmonic current and voltage rms,

harmonic active and reactive powers over a dynamic

range of 2000 to 1 at T A = 25°C

Supplies total (fundamental and harmonic) active and

apparent energy and fundamental active/reactive energy

on each phase and on the overall system

Less than 0.1% error in active and fundamental reactive

energy over a dynamic range of 1000 to 1 at T A = 25°C

Less than 0.2% error in active and fundamental reactive

energy over a dynamic range of 5000 to 1 at T A = 25°C

Less than 0.1% error in voltage and current rms over a

dynamic range of 1000 to 1 at T A = 25°C

Battery supply input for missing neutral operation

Wide-supply voltage operation: 2.4 V to 3.7 V

Reference: 1.2 V (drift 10 ppm/°C typical) with external

overdrive capability

40-lead lead frame chip scale package (LFCSP), Pb-free, pin-

for-pin compatible with ADE7854 , ADE7858 , ADE7868 and

ADE7878

APPLICATIONS

Energy metering systems

Power quality monitoring

Solar inverters

Process monitoring

Protective devices

ADE7880

GENERAL DESCRIPTION

The ADE7880 1 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 (THD) 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 I 2 C, 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 I 2 C 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.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

Patents Pending.

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

Trademarks and registered trademarks are the property of their respective owners.

Fax: 781.461.3113

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