3.17.3 Gate-to-Source/Drain Current

$I_{gs}$, $I_{gd}$ are calculated only for $IGCMOD = 1$.

$A = \begin{cases} 4.97232 \times 10^{-7} &\text{for } NMOS \\ 3.42536 \times 10^{-7} &\text{for } PMOS \end{cases} \qquad (3.533)$

$B = \begin{cases} 7.45669 \times 10^{11} &\text{for } NMOS \\ 1.16645 \times 10^{12} &\text{for } PMOS \end{cases} \qquad (3.534)$

$V_{gs}^{'} = \sqrt{(V_{gs} - V_{fbsd})^2 + 10^{-4}} \qquad (3.535)$

$V_{gd}^{'} = \sqrt{(V_{gd} - V_{fbsd})^2 + 10^{-4}} \qquad (3.536)$

$I_{gsd,mult} = I_{gtemp} \cdot \dfrac{W_{eff0} \cdot A}{(TOXG \cdot POXEDGE_i)^2} \cdot \Bigg( \dfrac{TOXREF}{TOXG \cdot POXEDGE_i} \Bigg)^{NTOX_i} \qquad (3.537)$

$\begin{aligned} I_{gs} &= I_{gsd,mult} \cdot DLCIGS \cdot V_{gs} \cdot V_{gs}^{'} \cdot NFIN_{total} \\ &\times exp [-B \cdot TOXG \cdot POXEDGE_i \\ &\times hypsmooth(AIGS(T) - BIGS_i \cdot V_{gs}^{'}, 10^{-6} ) \cdot (1 + CIGS_i \cdot V_{gs}^{'}) ] \end{aligned} \qquad (3.538)$

$\begin{aligned} I_{gd} &= I_{gsd,mult} \cdot DLCIGD \cdot V_{gd} \cdot V_{gd}^{'} \cdot NFIN_{total} \\ &\times exp [-B \cdot TOXG \cdot POXEDGE_i \\ &\times hypsmooth(AIGD(T) - BIGD_i \cdot V_{gd}^{'}, 10^{-6} ) \cdot (1 + CIGD_i \cdot V_{gd}^{'}) ] \end{aligned} \qquad (3.539)$