I have a couple of questions, regarding the ADE7953.
1.- For the RMS value, how many samples are taken?, I mean, which is the value of "N" in the equation 2, page 24?. It is said the measure takes more or less 200 ms at a rate of 6.99 kHz, but I can't understand how translate this rate to a number of samples.
2.- Why the value of Active Power, for resistive load, don't match exactly the value obtained from P = Vrms*Irms, assuming that both current and voltage are pure sine waves? For a load of 80 W light bulb with 110 V, the values are:
Vrms : 110 V.
Irms : 718 mA.
Active Power : 8000 mW
So P = 110*0.718 = 78,98 W = 7898 mW, it is an acceptable error?
Thanks in advance,