An amplifi er has dc gain a0 5 105 V/V and three pole frequencies f1 5 100 kHz, f2 5 1 MHz, and f3 5 10 MHz, arising at three nodes with equivalent resistances R1, R2, and R3. (a) Sketch and label the...

An amplifi er has dc gain a0 5 105 V/V and three pole frequencies f1 5 100 kHz, f2 5 1 MHz, and f3 5 10 MHz, arising at three nodes with equivalent resistances R1, R2, and R3. (a) Sketch and label the linearized Bode plot of gain magnitude for a visual estimation of fx and x for operation with 5 1 V/V, and verify that the circuit is unstable. (b) One way of stabilizing it is to place a compensating resistance Rc in parallel with R2 so as raise f2 and lower a0. Sketch the new Bode plot if Rc 5 R2y99, and verify that this causes a two-decade drop in a0 as well as a two-decade increase in f2. How do fx and m change? (c) Find the ratio RcyR2 that results in m 5 608.