Prove by inspection that the feedback is positive

Reference no: EM131099527

A student has adventurously replaced the PMOS common-source stage in Fig. 12.28 with an NMOS source follower (Fig. 12.100).

(a) Prove by inspection that the feedback is positive.

(b) Break the loop at the gate of M2, determine the loop gain, and prove that the feedback is positive.

Reference no: EM131099527

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