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2.63 Find the voltage gain vO/vId for the difference amplifier of Fig. 2.16 for the case R1 = R3 = 5 kΩ and R2 = R4 = 50 kΩ. What is the differential input resistance Rid? If the two key resistance ratios (R2/R1) and (R4/R3) are different from each other by 1%, what do you expect the common-mode gain Acm to be? Also, find the CMRR in this case. Neglect the effect of the ratio mismatch on the value of Ad. Figure 2.16

2.63 Find the voltage gain vO/vId for the difference amplifier of Fig. 2.16 for the case R1 = R3 = 5 kΩ and R2 = R4 = 50 kΩ. What is the differential input resistance Rid? If the two key resistance ratios (R2/R1) and (R4/R3) are different from each other by 1%, what do you expect the common-mode gain Acm to be? Also, find the CMRR in this case. Neglect the effect of the ratio mismatch on the value of Ad. Figure 2.16

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2.63 Find the voltage gain v O / v I d for the difference amplifier of Fig. 2.16 for the case R 1 = R 3 = 5 k Ω and R 2 = R 4 = 50 k Ω . What is the differential input resistance R i d ? If the two key resistance ratios ( R 2 / R 1 ) and ( R 4 / R 3 ) are different from each other by 1 % , what do you expect the common-mode gain A c m to be? Also, find the CMRR in this case. Neglect the effect of the ratio mismatch on the value of A d .
Figure 2.16

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