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Energy metering ICs deliver 0.1 percent accuracy for active, reactive measurements

Norwood, Mass.—Analog Devices Inc. has introduced four energy metering ICs designed to improve the accuracy and performance of commercial, industrial, and residential smart meters.

A smart meter accurately measures how much electricity is consumed or generated, and communicates with the local utility for power monitoring, billing, and other purposes. ADI's energy metering ICs are designed to enable smart electricity meters to deliver improved customer billing accuracy, advanced power quality monitoring, and reduced operating costs for utility companies.

ADI's ADE7878, ADE7868, ADE7858, and ADE7854 high-accuracy energy metering ICs are designed for poly-phase configurations, including three and four wire, wye and delta services. The ICs feature 0.1 percent accuracy for both active and reactive energy measurements over a dynamic range of 1000:1, and 0.2 percent accuracy for both active and reactive energy measurements over a dynamic range of 3000:1. The new products also deliver 0.1 percent accuracy over 1000:1 dynamic range for RMS (root-mean square) current and voltage measurements.

In addition to per-phase and neutral-energy measurements, the ADE7868 and ADE7878 are able to monitor energy quality parameters such as SAG, peak, period, angle measurements, and phase sequence. The ADE7868 and ADE7878 can also detect various tamper conditions—while continuing to operate properly—reducing field calls and meter troubleshooting time.


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Pricing: In 1,000 piece quantities, the ADE7878 costs $7.47; ADE7868, $7.11; ADE7858, $6.76; and ADE7854, $5.34.
Availability: Sampling now and are housed in a 40-lead LFCSP (lead-frame chip-scale package).
Datasheets: ADE7878, ADE7868, ADE7858, ADE7854.

Analog Devices, www.analog.com

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