A balanced CMOS OpAmp with high EMI immunity

CMOS; Analog integrated circuits; CMOS integrated circuits; Differential amplifiers; Electric current regulators; Electromagnetic compatibility; Electromagnetic pulse; Electromagnetic wave interference; Signal interference; Analysis and simulation; CMOS operational amplifiers; Input terminals; Miller operational amplifiers; Offset voltage; Phase margins; Power supply rejection; Unity-gain frequencies; Operational amplifiers

Abstract :

[en] 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. © 2014 IEEE.

Disciplines :

Electrical & electronics engineering

Author, co-author :

Subrahmanyam, B.; IITB, Monash Research Academy, Indian Institute of Technology, Bombay, India

Das, D.; Department of Electrical Engineering, Indian Institute of Technology, Bombay, India

Baghini, M. S.; Department of Electrical Engineering, Indian Institute of Technology, Bombay, India

Redouté, Jean-Michel ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés

Language :

English

Title :

A balanced CMOS OpAmp with high EMI immunity

Publication date :

2014

Event name :

2014 International Symposium on Electromagnetic Compatibility, EMC Europe 2014

Event date :

1 September 2014 through 4 September 2014

Audience :

International

Journal title :

IEEE International Symposium on Electromagnetic Compatibility

ISSN :

1077-4076

Publisher :

Institute of Electrical and Electronics Engineers Inc.

Pages :

703-708

Peer reviewed :

Peer reviewed

Funders :

INTEL
Government of India

Commentary :

9781479932252

Available on ORBi :

since 02 July 2019

Statistics

Number of views

49 (4 by ULiège)

Number of downloads

5 (5 by ULiège)

More statistics

Scopus citations^®

Scopus citations^®
without self-citations

OpenCitations

OpenAlex citations

Bibliography

Abuelma'attit, M.T.: 'Analysis of the effect of radio frequency interference on the DC performance of CMOS operational amplifiers,' in 'Analog integrated circuits and signal processing' (Springer, The Netherlands, 2005), Vol. 45, pp. 123-130
F. Fiori, "Operational amplifier input stage robust to EMI," Electron. Lett., vol. 37, no. 15, pp. 930-931, Jul. 2001.
C. Walravens, S. Van Winckel, J.-M. Redouté, and M. Steyaert, "Efficient reduction of electromagnetic interference effects in operational amplifiers," Electron. Lett., vol. 43, no. 2, pp. 84-85, Jan. 2007.
A. Richelli, "CMOS OpAmp resisting to large electromagnetic interferences," IEEE Trans. Electrom. Compat., vol. 52, no. 4, pp. 1062-1065, Nov. 2010.
J.-M. Redouté and M. Steyaert, "Measurement of EMI induced input offset voltage of an operational amplifier," Electron. Lett., vol. 43, no. 20, pp. 1088-1090, Sep. 2007
P.E. Allen and D.R. Holberg, "CMOS Analog Circuit Design", Oxford university Press, New York 2002.