23_Lecutre - Lecture 23 EE 114 Lecture 23 OTA Feedback...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
EE 114 Lecture 23 R. Dutton, B. Murmann 1 EE114 (HO #27) Lecture 23 OTA Feedback Circuits (Part I) R. Dutton, B. Murmann Stanford University R. Dutton, B. Murmann 2 Classification of “OpAmps” (1) Type Operational Amplifier Ideally a voltage-controlled voltage source Typically contains an output stage that can drive “arbitrary” loads, including small resistances Predominantly used for board-level circuitry Operational Transconductance Amplifier (OTA) Ideally a voltage controlled current source Typically restricted to capacitive (or moderate resistive) loads Primarily used in integrated circuits EE114 (HO #27)
Image of page 1

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

View Full Document Right Arrow Icon
EE 114 Lecture 23 R. Dutton, B. Murmann 3 Classification of “OpAmps” (2) Output configuration Single ended – Differential Predominantly used for integrated high-performance or high- precision amplifiers Requires common mode feedback circuit – Class-A Output cannot source/sink currents larger than quiescent point bias current – Class-AB Output can provide large drive currents “on demand” EE114 (HO #27) R. Dutton, B. Murmann 4 Topics EE114 Class-A OTAs with single ended outputs Overview of commonly used architectures Telescopic OTA, Folded Cascode OTA, Current Mirror OTA, Two-stage OTA Frequency response and stability in capacitive feedback configuration EE315A Continuous-time and switched-capacitor filters using fully differential OTAs Analysis of noise performance
Image of page 2
Image of page 3
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