Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C

Prévia do material em texto

Step of 5 16.018P 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 and 15, 1 L L Simplify the equation to find the ratio of width to length ratios of transistors, and W L Apply square on both sides W W 1 W L W L W L L DD W L W L Impose the condition, = in the expression. W L I W L Step 5 (a) Consider that the supply voltage, is and the threshold voltage, V, Substitute the values in the expression for the ratio of width to length ratios of transistors, and W L W 0.5 L since, 0.25 (1-0.25) 0.5625 0.78 Thus, the ratio of width to length ratios of transistors, and 0.778 L Step 5 (b) Consider that the supply voltage, is 1.8 V. and the threshold voltage, V, Substitute the values in the expression for the ratio of width to length ratios of transistors, and W L 0.5 L (1-0.386) = 0.378 L Thus, the ratio of width to length ratios of transistors, and .64 L Step of (c) Consider that the supply voltage, is and the threshold voltage, V, Substitute the values in the expression for the ratio of width to length ratios of transistors, and L I W 0.4 L 1.2 1 since, = 0.25 (1-0.5) 0.25 the ratio of width to length ratios of transistors, and L Step 5 Locate the obtained values on the plot. DD 0.5 (3,0.5) 0.4 (1.64,0.385) 0.3 (0.77,0.25) 0.2 0.1 0 1 2 3 4 (W/L) (W/L), Figure 1