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Answered: - Determine the differential voltage gain (vo/(vi1-vi2)) of

Determine the differential voltage gain (vo/(vi1-vi2)) of the circuit shown in Figure 1.

Assume:

K?n (W/L)= K?p (W/L)= 4 mA/V2 , |Vt|=1.5 V

VDD=10 V, V1=7.8V, V2=7.5 V, ?1=?2=0.01 V-1, I1=5 mA

Question 1

Determine the differential voltage gain (vo/(vi1-vi2)) of the circuit shown in Figure 1.

Assume:

K?n (W/L)= K?p (W/L)= 4 mA/V2 , |Vt|=1.5 V

VDD=10 V, V1=7.8V, V2=7.5 V, ?1=?2=0.01 V-1, I1=5 mA

Figure 1.

Question 2

The circuit shown in Figure 2 has the following parameters:

IREF= 50 ?A, -VEE=-5 V, ?=125 and VA=40 V.

Determine:

a) The output current of the circuits based on n=1

b) Repeat part (a) for n=3.

c) What is the current source voltage (VCS) for n=3?

d) What is the minimum value of VEE?

Figure 2.

Question 3

Use the Open-circuit time-constant technique and derive an expression for the fH of the

circuit shown in Figure 3.

Figure 3.

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