5.5. Design of a Basic Common-Source Amplifier
Unlike in the laboratory environment, an actual practical common-source amplifier would have a single power supply for the base and collector circuit bias. Also, the circuit design requires a tolerance to a wide range of parameter variation, including that due to temperature change. In this unit, the design process for a possible common-source amplifier is discussed. Emphasis is on dc bias stability, that is, on tolerance to device parameter and circuit component variations.
The common-source amplifier to be designed is shown in Fig. 5.9. Source resistor, RS, is included for bias (and gain) stabilization. The goal is for the circuit to function properly for any NMOS transistor, which has device ...
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