(a) State and explain (in full details) the type of feedback topology employed by the amplifier shown in Figure 4 above. (b) Using DC analysis, derive all the node voltages and branch currents. It can be assumed that the collector current in M3 is 4mA. (c) Identify the feedback circuit network and state the value of the feedback factor, В.

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6

+10V
10KO
1k2
Vo
M2
VIN
M3
M1
10MO
50KO
5ΚΩ
6KN
5KO
-10V
Figure 4
(a) State and explain (in full details) the type of feedback topology employed by the
amplifier shown in Figure 4 above.
(b) Using DC analysis, derive all the node voltages and branch currents. It can be
assumed that the collector current in M3 is 4mA.
(c) Identify the feedback circuit network and state the value of the feedback factor,
В.
(d) Using small signal AC analysis, draw the open loop model and hence calculate
the open loop gain (AoL) and closed loop gain (ACL). Students may have to make
some valid assumptions (if any) and must fully explain the rationale behind it.
ww
Transcribed Image Text:+10V 10KO 1k2 Vo M2 VIN M3 M1 10MO 50KO 5ΚΩ 6KN 5KO -10V Figure 4 (a) State and explain (in full details) the type of feedback topology employed by the amplifier shown in Figure 4 above. (b) Using DC analysis, derive all the node voltages and branch currents. It can be assumed that the collector current in M3 is 4mA. (c) Identify the feedback circuit network and state the value of the feedback factor, В. (d) Using small signal AC analysis, draw the open loop model and hence calculate the open loop gain (AoL) and closed loop gain (ACL). Students may have to make some valid assumptions (if any) and must fully explain the rationale behind it. ww
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