(a) The current mirror shown below is designed to generate Io = 10 µA. Assume all the MOSFETs are identical with µnCox = 400 µA/V2 and overdrive voltage of 200mV. Neglect channel length modulation effects. Find the error in the mirror ratio if for all MOSFETs threshold voltage is 0.5V and the channel length modulation coefficient is 0.5V-1. (b) Find the output resistance of the current mirror.
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(a) The current mirror shown below is designed to generate Io = 10 µA. Assume all the MOSFETs are identical with µnCox = 400 µA/V2 and overdrive voltage of 200mV. Neglect channel length modulation effects. Find the error in the mirror ratio if for all MOSFETs threshold voltage is 0.5V and the channel length modulation coefficient is 0.5V-1. (b) Find the output resistance of the current mirror.