A cmos source-buffered differential input stage with high EMI suppression

Electromagnetic compatibility; Differential inputs; Differential pairs; Electromagnetic interferences; Emi suppressions; Input pins; Offset voltages; Electromagnetic pulse

Abstract :

[en] This paper introduces a CMOS source-buffered differential input stage exhibiting a high degree of immunity against electromagnetic interferences (EMI) which are applied on its input pins. The measurements of a test-IC illustrate that the source-buffered differential pair generates a maximal EMI induced input offset voltage of 116 mV when a 750 mV RMS EMI signal is injected in its inputs, while a classic differential pair output is saturated with a maximal offset of 610 mV under the same circumstances. © 2008 IEEE.

Disciplines :

Electrical & electronics engineering

Author, co-author :

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

Steyaert, M.; Dept. ESAT - MICAS Katholieke, Universiteit Leuven, Heverlee, Belgium

Language :

English

Title :

A cmos source-buffered differential input stage with high EMI suppression

Publication date :

2008

Event name :

34th European Solid-State Circuits Conference, ESSCIRC 2008

Event date :

15 September 2008 through 19 September 2008

Audience :

International

Journal title :

European Solid-State Circuits Conference Proceedings, ESSCIRC

Pages :

318-321

Peer reviewed :

Peer reviewed

Funders :

CSR

Commentary :

74847 9781424423620

Available on ORBi :

since 02 July 2019

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Bibliography

F. Fiori and P. S. Crovetti, "Nonlinear effects of radio-frequency interference in operational amplifiers", IEEE Trans, on Circuits and Systems I, vol. 49, no. 3, pp. 367-372, Mar. 2002.
F. Fiori, "On the susceptibility of analog circuit to EMI", Proc. of Advances in Analog Circuit Design (AACD), Maastricht, the Netherlands, Apr. 2006.
B. Razavi, Design of analog CMOS integrated circuits, McGraw-Hill, 2001.
G. B. Arfken, H. J. Weber, Mathematical methods for physicists, international edition, 4th ed., Academic Press, ch. 14, 1995.
J.-M. Redouté, M. Steyaert, "EMI resisting CMOS diff. pair structure", IEE Electronics Letters, vol. 42, no. 21, pp. 1217-1218, Oct. 2006.
J.-M. Redouté, M. Steyaert, 'Active load for differential amplifier with high output impedance and reduced supply voltage', IEE Electronics Letters, vol. 44, no. 2, pp. 67-68, Jan. 2008.

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