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Analog Electronics with LabVIEW®
book

Analog Electronics with LabVIEW®

by Kenneth L. Ashley
October 2002
Intermediate to advanced content levelIntermediate to advanced
432 pages
9h 20m
English
Pearson
Content preview from Analog Electronics with LabVIEW®

14.6. Output Buffer Stage

It is evident from the gain result, (14.29), that the high gain depends on having a high resistance at the output; a relatively small load resistor can reduce the gain substantially. For example, suppose that the amplifier is to be used as a resistance feedback amplifier as shown in Fig. 14.6. The input is at the gate of M2, and the feedback resistor is connected back to the gate of M1. The load at the output is Rf + R2 || RO.

Figure 14.6. Opamp with feedback resistor Rf. The feedback circuit adds load Rf + R2 in parallel with external load, RO, at the output.

For a specific example, assume that RO >> Rf >> R2 such ...

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ISBN: 0130470651Purchase book