1 6 Frequency response of amplifiers Measuring the

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1. 6 Frequency response of amplifiers Measuring the amplifier frequency response Figure 1. 20

1. 6 Frequency response of amplifiers Measuring the amplifier frequency response Figure 1. 20 Measuring the frequency response of a linear amplifier: At the test frequency ω , the amplifier gain is characterized by its magnitude (Vo /Vi) and phase . Sedra/Smith Copyright © 2011 by Oxford University Press, Inc.

Amplifier Bandwidth – The band of frequencies over which the gain of the amplifier

Amplifier Bandwidth – The band of frequencies over which the gain of the amplifier is almost constant, to within a certain number of decibels (usually 3 d. B)

Single Time Constant Figure 1. 22 Two examples of STC networks: (a) a lowpass

Single Time Constant Figure 1. 22 Two examples of STC networks: (a) a lowpass network and (b) a high-pass network. Microelectronic Circuits, International Sixth Edition

Bode Plots Low Pass Filter Figure 1. 23 (a) Magnitude and (b) phase response

Bode Plots Low Pass Filter Figure 1. 23 (a) Magnitude and (b) phase response of STC networks of the low-pass type. Microelectronic Circuits, International Sixth Edition

High Pass Filter Figure 1. 24 (a) Magnitude and (b) phase response of STC

High Pass Filter Figure 1. 24 (a) Magnitude and (b) phase response of STC networks of the high-pass type. Microelectronic Circuits, International Sixth Edition

Figure 1. 25 Circuit for Example 1. 5. Microelectronic Circuits, International Sixth Edition

Figure 1. 25 Circuit for Example 1. 5. Microelectronic Circuits, International Sixth Edition

Low Frequency Response of the Common Source Amplifiers • 9

Low Frequency Response of the Common Source Amplifiers • 9

High Pass Filter의 폼. Corner frequency w 0는 10

High Pass Filter의 폼. Corner frequency w 0는 10

• Internal Capacitive Effects and the High Frequency Model of the MOSFET 16

• Internal Capacitive Effects and the High Frequency Model of the MOSFET 16

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High Frequency Response of the CS amplifiers 19

High Frequency Response of the CS amplifiers 19

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• Miller’s Theorem 25

• Miller’s Theorem 25

Useful Tools for the Analysis of the High. Frequency Response of Amplifiers Using Miller’s

Useful Tools for the Analysis of the High. Frequency Response of Amplifiers Using Miller’s Theorem

8. 6 High-Frequency Response of the Common. Gate and Cascode Amplifier High-Frequency Response of

8. 6 High-Frequency Response of the Common. Gate and Cascode Amplifier High-Frequency Response of the Common-Gate Amplifier Common Gate Amplifier with internal capacitance Equivalent Circuit 32

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High-Frequency Response of MOS Cascode Amplifier Figure 8. 38 The cascode circuit with the

High-Frequency Response of MOS Cascode Amplifier Figure 8. 38 The cascode circuit with the various transistor capacitances indicated. 34

일 경우. Determine the 3 -d. B frequency f. H ① employ the open-circuit

일 경우. Determine the 3 -d. B frequency f. H ① employ the open-circuit timeconstant method. ② effective time constant ③ 3 -d. B frequency Cut-off 주파수가 크다. (8. 138) ④ unity-gain frequency Figure 8. 38 The cascode circuit with the various transistor capacitances indicated. (8. 139) 35

8. 10. 2 Frequency Response of the Source Follower Find zero frequency ① ②

8. 10. 2 Frequency Response of the Source Follower Find zero frequency ① ② ③ Since ④ Find pole frequency ① Rgd seen by Cgd, (8. 174) ② (8. 175) ③ ④ (8. 176) Figure 8. 51 Analysis of the high-frequency response of the source follower: (a) Equivalent circuit; (b) simplified equivalent circuit; and (c) determining the resistance Rgs seen by Cgs. 36