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Asked: 2023-07-23T10:07:18-04:00 In:

12.28 Find an expression for the output resistance Rout of the class AB output stage in Fig. P12.27. Toward that end, neglect the small-signal resistance of each of D1 and D2 and assume the current source supplying IBIAS has an output resistance RBIAS. Transistors QN and QP are equivalent to a single transistor with rπ = rπN || rπP, re = reN reP, and gm = gmN + gmP.

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12.28 Find an expression for the output resistance Rout of the class AB output stage in Fig. P12.27. Toward that end, neglect the small-signal resistance of each of D1 and D2 and assume the current source supplying IBIAS has an output resistance RBIAS. Transistors QN and QP are equivalent to a single transistor with rπ = rπN || rπP, re = reN reP, and gm = gmN + gmP.

12.28 Find an expression for the output resistance Rout of the class AB output stage in Fig. P12.27. Toward that end, neglect the small-signal resistance of each of D1 and D2 and assume the current source supplying IBIAS has an output resistance RBIAS. Transistors QN and QP are equivalent to a single transistor with rπ = rπN || rπP, re = reN reP, and gm = gmN + gmP.

microelectronics by sedra & smith chapter 12 questions

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