Advances in Low-Offset Opamps

Q. Fan, JH Huising, KAA Makinwa

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientific


This paper focuses on the design of amplifiers that achieve micro-volt offset by employing dynamic offset reduction techniques, which include chopping, auto-zeroing and chopper stabilization. The working principles and non-idealities of these techniques will be described. The up-modulated offset associated with chopping causes ripple, which can be a significant source of error if not filtered effectively. Thus, various ripple reduction techniques are introduced to suppress this ripple to the micro-volt level. Also discussed is the ping-pong architecture, which enables the realization of auto-zeroed amplifiers with continuous-time behavior. Examples of chopped amplifiers, auto-zeroed amplifiers and chopper stabilized amplifiers are presented, as well as designs in which multiple techniques are combined.
Original languageEnglish
Title of host publicationEfficient Sensor Interfaces, Advanced Amplifiers and Low Power RF Systems
Subtitle of host publicationAdvances in Analog Circuit Design 2015
EditorsKAA Makinwa, A Baschirotto, P Harpe
PublisherSpringer Science+Business Media
Number of pages13
ISBN (Electronic)978-3-319-21185-5
ISBN (Print)978-3-319-21184-8
Publication statusPublished - 2016
EventAACD 2015, Neuchatel, Switzerland - Dordrecht
Duration: 21 Apr 201523 Apr 2015

Publication series



ConferenceAACD 2015, Neuchatel, Switzerland


  • Circuits and Systems
  • Electronics and Microelectronics, Instrumentation


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