Chapter 14, Problem 14.14P

For the op−amp in the voltage follower circuit in Figure P14.14, the open−loop parameters are $A_{OL}=5\times {10}^3$ , $R_i=10\text{k}\Omega$ , and $R_o=1\text{k}\Omega$ . (a) Sketchthe small−signal equivalent circuit. (b) Determine the (i) closed−loop voltagegain ${\upsilon }_O/{\upsilon }_I$ , and (ii) output resistance $R_{of}$ .

Figure P14.14