“…However, Figure 12b, reporting the distortion for a 10kHz 500mVpp differential input versus the control voltage, shows that the linearity drops for low control voltages, when the gain is reduced, and the minimum transconductance gain to guarantee good linearity over the 500mVpp input range is 12.6 S, corresponding to Vctl=0.55V. [39] by considering also noise and distortion has been defined as…”