Article (Scientific journals)
Design of A Novel Highly EMI-Immune CMOS Miller OpAmp Considering Channel Length Modulation
Boyapati, S.; Redouté, Jean-Michel; Shojaei Baghini, M.
2017In IEEE Transactions on Circuits and Systems I: Regular Papers, 64 (10), p. 2679-2690
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Keywords :
CMOS; Circuit simulation; CMOS integrated circuits; Electromagnetic pulse; Integrated circuit design; Modulation; Channel length modulation; CMOS technology; High amplitudes; Maximum output; Measured results; Miller operational amplifiers; Offset voltage; Operating condition; Operational amplifiers
Abstract :
[en] This paper presents a novel CMOS Miller operational amplifier (OpAmp) that has high immunity to electromagnetic interference (EMI). The proposed CMOS Miller OpAmp uses the replica concept with the source-buffered technique in order to achieve high EMI immunity across a wide range of frequencies (10 MHz to 1 GHz). The proposed amplifier is designed using the first-order quadratic mathematical model. The modeling includes the body effect and channel length modulation. The circuit has been fabricated using 0.18 µm mixed-mode CMOS technology. Measurement results illustrate how the proposed Miller OpAmp reduces susceptibility to EMI even in the presence of high-amplitude interferences that are as high as 1 Vpp. Experimental results show that the maximum EMI-induced output offset voltage for the proposed Miller OpAmp is less than 10 mV over a wide range of frequencies (10 MHz to 1 GHz) when a 900 mVpp EMI signal is injected into the noninverting input. In contrast, the classic Miller OpAmp generates a maximum output offset voltage of 215 mV at 1 GHz under the same operating conditions. The measured results of the EMI-induced input offset corroborates the circuit simulations.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Boyapati, S.;  IITB-Monash Research Academy, IIT Bombay, Mumbai, 400076, India
Redouté, Jean-Michel  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Shojaei Baghini, M.;  Department of Electrical and Computer Systems Engineering, Monash University, Clayton, VIC, Australia, Department of Electrical Engineering, IIT Bombay, Mumbai, India
Language :
English
Title :
Design of A Novel Highly EMI-Immune CMOS Miller OpAmp Considering Channel Length Modulation
Publication date :
2017
Journal title :
IEEE Transactions on Circuits and Systems I: Regular Papers
ISSN :
1549-8328
eISSN :
1558-0806
Publisher :
Institute of Electrical and Electronics Engineers Inc.
Volume :
64
Issue :
10
Pages :
2679-2690
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 September 2018

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