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ADE7878 - Low End AVRMS

Question asked by mcpritt on Mar 18, 2014
Latest reply on Mar 24, 2014 by hmani

I have gone through the AN-1076 to calibrate the ADE7878 chip on a single phase, 120 VAC, 60 HZ source. The calibration seems to work fairly well on the top end of the scale, however, when the voltage gets below approximately 1/2 of full scale, the readings start to drift. At the lower end of the scale, I may be a few volts off.

 

Is this something that can be corrected so the reading is consistent over the whole scale?

 

Thanks,

Charlie

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