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Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_1764

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Step of 3 16.020P Refer to Figure 15.14 in the textbook for the graph between the normalized value of output, versus the ratio of width to length ratios of transistors, and The relation between the normalized value of output, and the ratio of width to length ratios of transistors, and is, 1 Simplify the equation to find the ratio of width to length ratios of transistors, and Apply square on both sides. W W Impose the condition, = in the expression. W Step 2 of 3 Consider that the supply voltage, is and the threshold voltage, V, is 0.5 V. Substitute the values in the expression for the ratio of width to length ratios of transistors, and 0.378 = 1.64 Thus, the maximum allowable ratio of width to length ratios of transistors, and is 1.64 Step 3 of 3 Consider that the length of the transistors is, 4 =0.18 µm The minimum area is obtained when = therefore, = 0.18 µm The transistor, is saturated and is in triode region. Then the currents are equal. Therefore, Thus, the values of and W₃ that minimize the combined areas of and are 0.45 and 0.18 µm respectively.

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