C H A P T E R 10 Feedback Microelectronic Circuits, Sixth Edition

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C H A P T E R 10 Feedback Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 10. 1 General structure of the feedback amplifier Figure 10.1 General structure of the feedback amplifier. This is a signal-flow diagram, and the quantities x represent either voltage or current signals. Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 10. 2 (a) A non-inverting op-amp circuit for Example 10. 1 Figure 10.2 (a) A non-inverting op-amp circuit for Example 10.1. (b) The circuit in (a) with the op-amp replaced with its equivalent circuit.s Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 10.4 Illustrating the application of negative feedback to improve the signal-to-interference ratio in amplifiers. Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 10. 6 Block diagram of a feedback voltage amplifier Figure 10.6 Block diagram of a feedback voltage amplifier. Here the appropriate feedback topology is series–shunt. Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 10. 7 Examples of a feedback voltage amplifier Figure 10.7 Examples of a feedback voltage amplifier. All these circuits employ series–shunt feedback. Note that the dc bias circuits are only partially shown. Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 10. 8 (a) Block diagram of a feedback current amplifier Figure 10.8 (a) Block diagram of a feedback current amplifier. Here, the appropriate feedback topology is the shunt–series. (b) Example of a feedback current amplifier. Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.