The single-stage op amp in Fig. 9.54 has a nondominant pole p 2 with |p 2 |=200

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The single-stage op amp in Fig. 9.54 has a nondominant pole p₂with |p₂|=200 Mrad/s. The op amp is in a unity-gain negative feedback loop (f = 1).

(a) If g_m1= 0.3 mA/V, what value of C_L givesa 45° phase margin? (Assume that the capacitance at the op amp output is dominated by C_L and the op-amp gain a(s) can be modeled as having two poles.)

(b) If I_TAIL = 0.5 mA, what is the output slew rate with this C_L?

Figure 9.54:

VDD M4 Мз V81 MAA МзА V. V82 Мaл M1A in- M2 M1 in+ O TAIL -Vss

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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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The single-stage op amp in Fig. 9.54 has a nondominant pole p 2 with |p 2 |=200

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VDD M4 Мз V81 MAA МзА V. V82 Мaл M1A in- M2 M1 in+ O TAIL -Vss

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Analysis and Design of Analog Integrated Circuits

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