Fundamentals-of-Microelectronics-Behzad-Razavi.pdf

46 repeat problem 45 for the circuit shown in fig 773

Info icon This preview shows pages 389–393. Sign up to view the full content.

View Full Document Right Arrow Icon
46. Repeat Problem 45 for the circuit shown in Fig. 7.73. 47. Assuming , calculate the voltage gain of the circuit shown in Fig. 7.74. Explain why this stage is not a common-gate amplifier.
Image of page 389

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
BR Wiley/Razavi/ Fundamentals of Microelectronics [Razavi.cls v. 2006] June 30, 2007 at 13:42 365 (1) Sec. 7.6 Chapter Summary 365 V R DD D out V M 1 I 1 C 1 in V = 1.8 V Figure 7.70 V DD out V M 1 V b in V R S M 2 V DD out V M 1 V b in V M 2 R D V DD out V M 1 V b in V R S M 2 R 1 V DD out V M 1 V b in V M 2 M V b 3 R D out V M M in V V b 1 R D I 1 V DD 2 (c) (a) (b) (d) (e) Figure 7.71 48. Calculate the voltage gain of the stage depicted in Fig. 7.75. Assume and the capaci- tors are very large. 49. The source follower shown in Fig. 7.76 is biased through . Calculate the voltage gain if and . 50. We wish to design the source follower shown in Fig. 7.77 for a voltage gain of 0.8. If and , determine the required gate bias voltage. 51. The source follower of Fig. 7.77 is to be designed with a maximum bias gate voltage of 1.8 V. Compute the required value of for a voltage gain of 0.8 if . 52. The source follower depicted in Fig. 7.78 employs a current source. Determine the values of and if the circuit must provide an output impedance less than 100 with V. Assume . 53. The circuit of Fig. 7.78 must exhibit an output impedance of less than 50 with a power budget of 2 mW. Determine the required value of . Assume .
Image of page 390
BR Wiley/Razavi/ Fundamentals of Microelectronics [Razavi.cls v. 2006] June 30, 2007 at 13:42 366 (1) 366 Chap. 7 CMOS Amplifiers V R DD out V M V b in V M 1 R D1 D2 X 2 Figure 7.72 V R DD out V M V b in V D2 X R D1 M 1 2 Figure 7.73 V DD out V M 1 in V I 1 R G Figure 7.74 54. We wish to design the source follower of Fig. 7.79 for a voltage gain of 0.8 with a power budget of 3 mW. Compute the required value of . Assume is very large and . 55. Determine the voltage gain of the stages shown in Fig. 7.80. Assume . 56. Consider the circuit shown in Fig. 7.81, where a source follower ( and ) precedes a common-gate stage ( and ). (a) Writing , compute the overall voltage gain. (b) Simplify the result obtained in (a) if . Design Problems In the following problems, unless otherwise stated, assume . 57. Design the CS stage shown in Fig. 7.82 for a voltage gain of 5 and an output impedance of 1 k . Bias the transistor so that it operates 100 mV away from the triode region. Assume the capacitors are very large and . 58. The CS amplifier of Fig. 7.82 must be designed for a voltage gain of 5 with a power budget of 2 mW. If V, determine the required value of . Make the same assumptions
Image of page 391

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
BR Wiley/Razavi/ Fundamentals of Microelectronics [Razavi.cls v. 2006] June 30, 2007 at 13:42 367 (1) Sec. 7.6 Chapter Summary 367 V DD out V M 1 R R D R 1 C B R R 2 3 4 in V C 1 Figure 7.75 M 1 V DD R in V G R S out V 1 k 50 k = 1.8 V Figure 7.76 M 1 V DD in V R S out V 500 = 1.8 V Figure 7.77 M 1 V DD out V in V I 1 = 1.8 V Figure 7.78 as those in Problem 57. 59. We wish to design the CS stage of Fig. 7.82 for maximum voltage gain but with and a maximum output impedance of 500 . Determine the required current. Make the same assumptions as those in Problem 57.
Image of page 392
Image of page 393
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern