I began to learn the knowledge of AGC from this article"DESIGN AND OPERATION OF UTOMATIC GAIN CONTROL LOOPS FOR RECEIVERS IN MODERN COMMUNICATIONS SYSTEMS".
I can hardly understand the concept of "the incremental gains of the VGA".
i have copied the content on the following:
from the datasheet of AD8367, 20*log(Vout/Vin)= 50*(Vg-0.1)
how 0.6447Vrms/V came out(where did Vin go)? what does it mean??
if any one can help that would be apprecaite!