QUESTION 7: Figure 13.11 shows the ac equivalent circuit of the gain s

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QUESTION 7: Figure 13.11 shows the ac equivalent circuit of the gain stage of 741 op-amp. Gain for the gain stage (i. e. Av2) can be calculated using equation given below the Figure 13.11. Given that βn = 200, R8 = 0 Ω, Ri3 = 4.5 MΩ, Ract2 = 74.404761904762 kΩ, and bias current IC17 = 0.672 mA. Calculate the gain of the gain stage (i.e. Av2). Ri2(MΩ) Format : 7.2795939423957 Ro17 (kΩ) Format : 76.708475809295 Av2 (V/V) Format : −765.70604502993 Format: 7.2795939423957 Ro17 (kΩ) Format : 76.708475809295 Av2 (V/V) Format : -765.70604502993 Figure 13.11 Av2 = vo2 vo1 = −βn(1 + βn)R9(Ract2∥Ri3∥Ro17) Ri2{R9 + [rπ17 + (1 + βn)R8]}

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QUESTION 7: Figure 13.11 shows the ac equivalent circuit of the gain stage of 741 op-amp. Gain for the gain stage (i.e.

A_{v 2}

) can be calculated using equation given below the Figure 13.11 . Given that

β_{n} = 200, R_{8} = 0 Ω, R_{i 3} = 4.5 M Ω, R_{act 2} = 74.404761904762 k Ω

, and bias current

I_{C 17} = 0.672 m A

.

Calculate the gain of the gain stage (i.e.

A_{v 2}

).

\begin{array}{l} R_{i 2} (M Ω) ◻ Format : 7.2795939423957 \\ R_{017} (k Ω) ◻ Format : 76.708475809295 \\ A_{v 2} (V / V) ◻ Format : - 765.70604502993 \end{array}

Format: 7.2795939423957

R_{o 17} (k Ω)

Format : 76.708475809295

A_{v 2} (V / V)

Format : -765.70604502993 Figure 13.11

A_{v 2} = \frac{v_{o 2}}{v_{o 1}} = \frac{- β_{n} (1 + β_{n}) R_{9} (R_{a c t 2} ∥ R_{i 3} ∥ R_{o 17})}{R_{i 2} {R_{9} + [r_{π 17} + (1 + β_{n}) R_{8}]}}

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