13.1. Combining NMOS and PMOS Circuits in Cascade
The circuit of Fig. 13.1 illustrates the concept of combining NMOS circuits with PMOS circuits for enabling direct coupling of the stages. The added feature of a dual power supply is included, which provides for having the input and outputs at ground potential. One of the important advantages of this is that connecting input sources and output loads does not affect the bias.
Figure 13.1. Cascade of a differential stage and a common-source stage. No coupling capacitors or bypass capacitors are required. This is therefore a dc amplifier.
The input can be set equal to zero volts, as it is the ...
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