Pole-zero estimation and analysis of op-amp design with negative Miller compensation

Muhaned Zaidi, Ian Grout, Abu Khari A'Ain

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, pole-zero estimation, analysis and simplification of the transfer function for a two-stage operational amplifier (op-amp) is presented. The circuit design considered is a folded cascode complementary metal oxide semiconductor (CMOS) op-amp incorporating both Miller and negative Miller frequency compensation. The design was created using a 0.35 μm CMOS fabrication process and analyzed for DC gain, unity gain frequency, gain margin, phase margin and open-loop pole and zero locations. Cadence Virtuoso was used for design entry and the Spectre simulator used for circuit level simulation studies. The extracted poles and zeros were used to create the circuit transfer function which was then analyzed using MATLAB. This allowed the transfer function to be simplified by reducing the numbers of poles and zeros for comparison with the frequency response of the original circuit. Finally, a Verilog-A model was created and compared to the original circuit and the MATLAB simulation study results.

Original languageEnglish
Title of host publication2017 6th International Conference on Modern Circuits and Systems Technologies, MOCAST 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509043866
DOIs
Publication statusPublished - 31 May 2017
Event6th International Conference on Modern Circuits and Systems Technologies, MOCAST 2017 - Thessaloniki, Greece
Duration: 4 May 20176 May 2017

Publication series

Name2017 6th International Conference on Modern Circuits and Systems Technologies, MOCAST 2017

Conference

Conference6th International Conference on Modern Circuits and Systems Technologies, MOCAST 2017
Country/TerritoryGreece
CityThessaloniki
Period4/05/176/05/17

Keywords

  • Miller effect
  • Operational amplifier
  • poles and zeros
  • transfer function

Fingerprint

Dive into the research topics of 'Pole-zero estimation and analysis of op-amp design with negative Miller compensation'. Together they form a unique fingerprint.

Cite this