Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloA Chopper Instrumentation Amplifier with Input Resistance Boosting by Means of Synchronous Dynamic Element Matching
Anno di pubblicazione2017
Formato-
Autore/iButti F.; Piotto M.; Bruschi P.
Affiliazioni autoriDipartimento di Ingegneria dell'Informazione, University of Pisa, , Italy CNR, IEIIT-PISA, Pisa, , Italy; Dipartimento di Ingegneria dell'Informazione, University of Pisa, , Italy
Autori CNR e affiliazioni
  • MASSIMO PIOTTO
Lingua/e
  • inglese
AbstractIn this work, we propose a method to increase the parasitic input resistance caused by application of chopper modulation to indirect current feedback instrumentation amplifiers. The result is obtained by applying dynamic element matching to the input and feedback ports at the same frequency as chopper modulation. The proposed approach requires effective offset ripple rejection and equalization of the input and feedback common mode voltages. An in-Amp architecture that meets both requirements and embodies the proposed input resistance boosting method is described. Experimental verification is provided by means of a prototype designed and fabricated using the 0.32mu text m CMOS devices of the STMicroelectronics BCD6s process. The amplifier operates with a 3.3 V supply voltage and a total current absorption of 170 mu text A. An input impedance in excess of 1\text GOmega has been measured at a chopper frequency of 20 kHz. The input referred voltage noise density is 18 nV/sqrt(Hz) with a flicker corner of 0.2 Hz and 200 Hz bandwidth.
Lingua abstractinglese
Altro abstract-
Lingua altro abstract-
Pagine da753
Pagine a764
Pagine totali-
RivistaIEEE transactions on circuits and systems. I, Regular papers (Print)
Attiva dal 2004
Editore: Institute of Electrical and Electronics Engineers, - Piscataway, NJ
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 1549-8328
Titolo chiave: IEEE transactions on circuits and systems. I, Regular papers (Print)
Titolo proprio: IEEE transactions on circuits and systems. (Print)
Titolo abbreviato: IEEE trans. circuits. syst., I Regul. pap. (Print)
Titoli alternativi:
  • Institute of Electrical and Electronics Engineers transactions on circuits and systems. (Print)
  • 1, (Print)
  • Regular papers (Print)
  • Regular papers (Print)
  • Transactions on circuits and systems. (Print)
  • I, (Print)
  • Regular papers (Print)
  • Circuits and systems. (Print)
  • I, (Print)
  • Regular papers (Print)
  • Circuits and systems. (Print)
  • 1, (Print)
  • Regular papers (Print)
Numero volume della rivista64
Fascicolo della rivista-
DOI10.1109/TCSI.2016.2633384
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • Scopus (Codice:2-s2.0-85007110979)
  • ISI Web of Science (WOS) (Codice:000399015100001)
Parole chiaveChopper amplifier; current feedback; input resistance; instrumentation amplifier
Link (URL, URI)http://www.scopus.com/record/display.url?eid=2-s2.0-85007110979&origin=inward
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Data di accettazione-
Note/Altre informazioni-
Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR
    Progetti Europei-
    Allegati