A balanced CMOS OpAmp with high EMI immunity

Subrahmanyam Boyapati, Devarshi Das, Maryam Shojaei Baghini, Jean-Michel Redoute

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

9 Citations (Scopus)


In this paper a balanced CMOS operational amplifier which has higher electromagnetic interference (EMI) immunity compared to a double differential amplifier and standard Miller operational amplifier, has been introduced. The proposed amplifier has better EMI immunity, from 1 MHz - 1 GHz, by keeping specifications such as gain, -3 dB bandwidth, phase margin, power supply rejection and unity gain frequency same as in the Miller operational amplifier. Analysis and simulation results are compared when an EMI signal of 1.1 Vpp applied at the input terminal. The simulation results show that the EMI-induced offset voltage is lesser over a wide range of frequencies for the proposed amplifier.
Original languageEnglish
Title of host publicationProceedings of the 2014 International Symposium on Electromagnetic Compatibility (EMC Europe 2014)
EditorsPeter Stenumgaard
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages6
ISBN (Print)9781479932276
Publication statusPublished - 2014
EventInternational Symposium on Electromagnetic Compatibility (EMC Europe) 2014 - The Swedish Exhibition & Congress Centre, Gothenburg, Sweden
Duration: 1 Sept 20144 Sept 2014


ConferenceInternational Symposium on Electromagnetic Compatibility (EMC Europe) 2014
Abbreviated titleEMC Europe 2014

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