Consider the differential amplifier shown in Figure 9.24(a). Let (R_{1}=R_{3}) and (R_{2}=R_{4}). Design the amplifier such that

Question:

Consider the differential amplifier shown in Figure 9.24(a). Let $R_{1}=R_{3}$ and $R_{2}=R_{4}$. Design the amplifier such that the differential voltage gain is (a) 40 , (b) 25 , (c) 5 , and (d) 0.5. In each case the differential input resistance should be as large as possible but under the condition that the largest resistor value is limited to $250 \mathrm{k} \Omega$.

Figure 9.24(a):-

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