3.22.2 Thermal Noise Model (TNOIMOD = 0)

$Q_{inv} = | Q_{s,intrinsic} + Q_{d,intrinsic} | \times NFIN_{total} \qquad (3.632)$

$\overline{i_d^2} = \begin{cases} NTNOI \cdot \dfrac{4 kT \Delta f}{ \Bigg[ R_{ds} + \dfrac{L_{eff}^2}{\mu_{eff} Q_{inv}} \Bigg]} &\text{if } RDSMOD = 0 \text{ or } 2 \\ \\ NTNOI \cdot \dfrac{4 kT \Delta f}{L_{eff}^2} \cdot \mu_{eff} \cdot Q_{inv} &\text{if } RDSMOD = 1 \end{cases} \qquad (3.633)$