We demonstrated the feasibility of the adaptive frequency compensation approach to design maximum- and constant-bandwidth feedback amplifiers. A basic CMOS amplifier exhibiting 66-dB dc gain and 310-MHz gain-bandwidth product was designed. For closed-loop gains ranging from 1 to 10, the closed loop bandwidth was found never lower than 401 MHz. A similar amplifier with equal gain-bandwidth product, but adopting the traditional fixed compensation approach, would exhibit a closed-loop bandwidth decreased to 33 MHz when the gain magnitude is set to 10. The enhanced frequency performance is obtained with a 48% increase in current consumption, while the other main opamp performance parameters remain almost unchanged compared to the standard solution.