Analog Electronics with LabVIEW®

4.5. Output Conductance Parameter

The output conductance accounts for the finite slope of the output characteristic, an example of which is shown in Fig. 4.5. The plot for the SPICE formulation [(3.8)] of the active region is also shown (applicable to the device for V_DS > V_effn). Both plots are for V_GS = constant (i.e., V_gs = 0 and g_mV_gs = 0).

Figure 4.5. Output characteristics illustrating nonzero active-region slope. Also shown is the SPICE formulation for the active region. For the plots, λ_n = 1/10 V. A possible bias point with I_D and V_DS is included.

In the ideal case, for any v_DS in the active region, the current is the same for a given ...