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(Solved): The current steering circuit below is fabricated in a CMOS technology for which ???????????????????? ...



The current steering circuit below is fabricated in a CMOS technology for which ???????????????????? = ????′ ???? = 300???????? ????2, ???????????????????? = ????′ ???? = 90???????? ????2, ???????????? = 0.5 ????, ???????????? = ―0.5 ????, ????′ ???????? = 5 ???? ????????, |????′ ????????| = 6 ???? ???????? . If all devices have ???? = 0.42 ????????, design the circuit so that ???????????????? = 20 ????????, ????2 = 80 ????????, ????3 = ????4 = 50 ????????, and ????5 = 110 ????????. Use the minimum possible device widths necessary to operate the current source ????2 with voltages at its drain as high as +0.8 V and to operate the current sink ????5 with voltages at its drain as low as -0.8 V. a. Specify the widths of all devices and find the value of ????. (18 points) b. Find the output resistance of the current source ????2 and the output resistance of the current sink ????5 . (6 points)



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