Analog Devices has introduced an energy metering IC that offers real-time harmonic analysis for energy meters and power quality monitoring equipment. Designed for polyphase meters, the ADE7880 energy metering IC offers harmonic analysis, whcih includes magnitude and phase information. The company claims that the IC is the first to use the company's proprietary ARTM (adaptive real-time monitoring) harmonic analysis technology, which eliminates the need for custom development of DSP. The IC is pin-compatible with the company's ADE78xx energy metering ICs which is designed for three-phase configurations. For each harmonic, the IC computes the voltage and current rms, power factor, and active, reactive and apparent powers. The IC also computes THD+N (total harmonic distortion plus noise) ratio as well as harmonic distortion as a ratio of the fundamental. There are seven sigma-delta ADCs, a digital integrator, voltage reference and all metrology signal processing integrated in a single 40-lead lead-frame chip scale package. The IC is suitable for energy measurement; data and power management; user interface; RF, GSM and GPRS; and power-line carrier communications.
