D 13.25 (a) Show that the PSRR− of a CMOS two-stage op amp for which all transistors have the same channel length and are operated at equal |VOV| is given by
(b) For |VOV| = 0.15 V, what is the minimum channel length required to obtain a PSRR− of 72 dB? For the technology available, .
(b) 0.45 m
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