Calculate the return ratio for the inverting amplifier in Fig 9 64 Here, the controlled source and C in form a simple op amp model Assume a v (s) 1000 (1 s 100) (1 s 10 6 ) (a) Assume the op amp input capacitance C in 0 What is the frequency at which R (j Iuml ) 1 How does this frequency compare to...

a C in 0 When S j j510 4 Rj 1 When S j j10 5 a v j 1 The latter frequen ...

Calculate the return ratio for the inverting amplifier in Fig. 9.64. Here, the controlled source and C

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Calculate the return ratio for the inverting amplifier in Fig. 9.64. Here, the controlled source and C in form a simple op-amp model. Assume a_v(s) = 1000/[(1 + s/100) (1 + s/10⁶)].

(a) Assume the op-amp input capacitance C_in = 0.

What is the frequency at which |R (jÏ‰)| = 1? How does this frequency compare to the frequency at which |a_v(jÏ‰)| = 1?

(b) Find the phase margin for the cases C_in = 0, C_in =4 pF, and C_in =20 pF.

Figure 9.64:

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Analysis and Design of Analog Integrated Circuits

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Authors: Paul R. Gray, ‎ Paul J. Hurst Stephen H. Lewis, ‎ Robert G. Meyer

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Question Posted: Sep 29, 2018 12:03 PM

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Calculate the return ratio for the inverting amplifier in Fig. 9.64. Here, the controlled source and C

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100 k2 100 k2 Ve a,(s)v. Cin

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