Analog Electronics with LabVIEW®

4.1. Amplifier Circuit and Signal Equivalent Circuits

To serve as an illustration of the utility of the parameters, the discussion of the linear model and g parameters will be accompanied by a signal-performance evaluation of an NMOS transistor in the most general amplifier configuration (Fig. 4.1). The circuit includes drain and source resistors, and input is at the gate terminal. As shown in Fig. 4.1(b), output can be at the drain (common-source amplifier) or source (source-follower amplifier).

Figure 4.1. (a) Ideal NMOS in a basic common-source amplifier circuit (output, V_ocs). Dc supply nodes of Fig. 4.1(a) are set to zero volts to obtain the signal circuits of Fig. 4.1(b) and (c). An alternative output is V_oef [shown in (b)], which is ...