ECE 342 homework 2; due Friday February 12
(hand in to Ian's mailbox before 11:59 pm on Friday)

(1)
(a) Study the 4 amplifier topologies in Figure 8.4 page 676
Sedra&Smith.
(b) Consider an ideal voltage to voltage series-shunt amplifier
with open loop gain A, open loop input impedance Ri and
open loop output impedances Ro.
Derive the formulas for the input and output impedances Rif
and Rof of the closed loop amplifier
with feedback gain beta in terms of  A, Ri, Ro, beta.
(c) Now redo part (b) for the case of a
voltage to current series-series amplifier.

(2) Exercise 8.5 page 688 Sedra&Smith 

(3) [looking at a different amplifier topology]
(a) (This part of the question parallels Example 8.2 pp. 692-6
Sedra&Smith, but follows the solution technique of the lectures
rather than the recipes of the book)
Consider the amplifier of Fig. 8.17(a) with values described in
Example 8.2.
By representing the feedback block with a Z parameter two port,
find the feedback gain beta and obtain the open loop
circuit with loading effects Fig. 8.17(b).
(b) Now complete Example 8.2.
(you can follow parts of the book's solution if you need to.)