Non-inverting amplifier is one of the two basic operational amplifier (op amp) circuits. In this type of amplifier product between close loop gain at zero hertz (ADC) and bandwidth (BW) will be constant and equal to unity-gain frequency (ft). A capacitive load (CL) together with op amp output resistance (R0) will create a new pole at frequency fp, thus modifying frequency response of the amplifier. If ft greater than fp , a non-inverting amplifier might become unstable by having a high overshoot on its step response. One of the references used in this paper stated that the amplifier will be stable if ADC equal or greater than 10.(fp/ft). This paper explains that we can choose ADC much lower than 10.(fp/ft) while maintaining a relatively stable non-inverting amplifier. This conclusion agrees with simulation and measurement results.