Abstract
The output stage of a low-voltage OpAmp should be able to deliver an output voltage signal that is as large as possible, preferably from one supply-voltage rail to the other. After all, the supply-voltage range is by definition not very great so we want to be able to make full use of it. This rules out the use of emitter followers as output transistors, because such a use would result in the loss of one diode voltage. The actual output transistors of the output stages discussed in this Chapter therefore have a common-emitter configuration.
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References
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© 1993 Springer Science+Business Media New York
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Fonderie, M.J., Huijsing, J.H. (1993). Output Stages. In: Design of Low-Voltage Bipolar Operational Amplifiers. The Springer International Series in Engineering and Computer Science, vol 218. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3142-5_3
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DOI: https://doi.org/10.1007/978-1-4615-3142-5_3
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