2.115 Consider a noninverting amplifier with gain of 5 utilizing an internally compensated op amp with ft = 2 MHz. What is the 3-dB frequency of the amplifier? At what frequency is the gain of the amplifier 1% below its low-frequency magnitude? If the input is a 10-mV step, find the 10% to 90% rise time of the output voltage. (Note: The step response of STC low-pass networks is discussed in Appendix E. Specifically, note that the 10% to 90% rise time of a low-pass STC circuit with a time constant τ is 2.2τ .)