1.

Using the incremental low-frequency small-signal model of the MOS device, the Norton equivalent resistance of the following circuit is

A. \({r_{ds}} + R + {g_m}{r_{ds}}R\)
B. \(\frac{{{r_{ds}} + R}}{{1 + {g_m}{r_{ds}}}}\)
C. \({r_{ds}} + \frac{1}{{{g_m}}} + R\)
D. \({r_{ds}} + R\)
Answer» C. \({r_{ds}} + \frac{1}{{{g_m}}} + R\)


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