Using the incremental low frequency small-signal model of the MOS device, the Norton equivalent resistance of the following circuit is
A. $${{\text{r}}_{{\text{ds}}}} + {\text{R}} + {{\text{g}}_{\text{m}}}{{\text{r}}_{{\text{ds}}}}{\text{R}}$$
B. $${{\text{r}}_{{\text{ds}}}} + \frac{1}{{{{\text{g}}_{\text{m}}}}} + {\text{R}}$$
C. $${{\text{r}}_{{\text{ds}}}} + {\text{R}}$$
D. $$\frac{{{{\text{r}}_{{\text{ds}}}} + {\text{R}}}}{{1 + {{\text{g}}_{\text{m}}}{{\text{r}}_{{\text{ds}}}}}}$$
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Analog Electronics
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