Abstract
After presenting an overview of analog circuits and their applications, the drawbacks and limitations of some traditional op-amp-based circuits have been elaborated. A brief account of a number of alternative, popular and modern analog circuit building blocks such as operational transconductance amplifier, Current conveyors, operational trans-resistance amplifier, four terminal floating nullors, current differencing buffered amplifier and current differencing transconductance amplifier, is given and the necessity and the scope of the present monograph have been highlighted.
The original version of this chapter was revised. An erratum to the chapter can be found at DOI: http://dx.doi.org/10.1007/978-1-4614-5188-4_9
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Notes
- 1.
The minimum number of resistors necessary to realize VCCS and CCVS is one.
- 2.
Although a specific type of OTRA namely, the so called Norton amplifier had been commercially available since long from several manufacturers such as LM3900 from National Semiconductors, these commercial realizations do not provide virtual ground at the input terminals and they allow the input current to flow only in one direction. The former disadvantage limits the functionality of the Norton amplifier whereas the later calls for the use of external DC bias circuits leading to complex and clumsy designs even for simple functions.
- 3.
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Senani, R., Bhaskar, D.R., Singh, A.K., Singh, V.K. (2013). Introduction. In: Current Feedback Operational Amplifiers and Their Applications. Analog Circuits and Signal Processing. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-5188-4_1
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DOI: https://doi.org/10.1007/978-1-4614-5188-4_1
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