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Microelectronic Circuits, 7 th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc. Differential and Multistage Amplifiers

Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

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Page 1: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Differential and Multistage Amplifiers

Page 2: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 9.1 The basic MOS differential-pair configuration.

Page 3: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, Sixth Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.Figure 9.2 The MOS differential pair with a common-mode input voltage VCM.

Page 4: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 9.3 Circuits for Example 8.1. Effects of varying VCM on the operation of the differential pair.

Page 5: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 9.3 Circuits for Example 8.1. Effects of varying VCM on the operation of the differential pair.

Page 6: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 9.3 Circuits for Example 8.1. Effects of varying VCM on the operation of the differential pair.

Page 7: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

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

Differential Gain

Page 8: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

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

Gain = Av=gmRD

Page 9: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

A Bi-CMOS amplifier

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

Page 10: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Two-stage CMOS op-amp configuration

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Page 11: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 9.14 The basic BJT differential-pair configuration.

Page 12: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Page 13: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Page 14: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 8.21 A differential amplifier with emitter resistances. Only signal quantities are shown (in color).

Page 15: Differential and Multistage Amplifiers - U of S Engineeringengr 8 Differential... · Figure 9.3 Circuits for Example 8.1.Effects of varying V CM on the operation of the differential

Microelectronic Circuits, 7th Edition Sedra/Smith Copyright © 2010 by Oxford University Press, Inc.

Figure 8.23 The differential amplifier fed in a single-ended fashion.