ADI ADE7878高精度三相电表方案

ADI 公司的ADE7878是高精度三相电能测量IC,集成了串行接口和三个灵活的脉冲输出,包括有二阶Delta-Sigma ADC,数字积分器,基准电路,以及进行总的有功,无功和表观能量测量以RMS计算所需要的所有信号处理.采用固定功能的DSP来实现这些信号处理. ADE7878具有精度高,支持EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22 and IEC 62053-23,和三相三线或四线制兼容,测量误差小于0.1%, 工作电压在2.4 到 3.7V.本文介绍ADE7878主要特性,功能方框图, 总的有功和无功与表观电量累加框图,以及评估板EVAL-ADE7878EB主要特性,方框图, 电路图和材料清单BOM.

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 Σ-Δ ADCs, a digital integrator, reference circuitry, and all the signal processing required to perform total (fundamental and harmonic) active, reactive and apparent energy measurement, fundamental only active and reactive energy measurement and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing.
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