Energy metering IC Provides delivers complete harmonic analysis
ARTM automatically tracks changes in the fundamental frequency, which eliminates any effects of frequency drift on accuracy of the measurements. For each harmonic, the IC computes the voltage and current rms, power factor, and active, reactive and apparent powers. It also computes THD+N (total harmonic distortion plus noise) ratio as well as harmonic distortion as a ratio of the fundamental. It delivers active and reactive energy accuracy better than 0.2% over a dynamic range of 5000:1. Accuracy better than 0.1% is achieved over a dynamic range of 1000:1 with gain calibration only. Seven sigma-delta ADCs are integrated as well as a digital integrator, voltage reference and all metrology signal processing. The chip is suitable for class 0.2 meters.
Get the datasheet at www.analog.com/ADE7880
Visit Analog Devices at www.analog.com
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