Skip to main content
SpringerLink
Log in

1 V fully balanced differential amplifiers: Implementation and experimental results

  • Published:
Analog Integrated Circuits and Signal Processing Aims and scope Submit manuscript

Abstract

We report a novel low voltage fully differential class AB operational amplifier and a fully balanced preamplifier, which are based on Dynamic Threshold voltage MOSFET (DTMOS) transistors. Pseudo P type DTMOS transistors are used to enhance the differential input common-mode range. The proposed circuits were fabricated using standard CMOS 0.18 μm CMOS process technology. The fully differential class AB amplifier is implemented to enhance the noise performance of low voltage high precision switched capacitor circuits, the fully balanced preamplifier is implemented to drive the differential inputs of the analog to digital converter used in the analog front-end of a near-infrared spectroreflectometry (NIRS) receiver of a multi-wavelength wireless brain oxymeter apparatus. The power consumption of the proposed preamplifier is only 80 μW. The minimum experimental supply voltage is roughly 0.8 V.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

  1. A.-J. Annema, “Low-power bandgap references featuring DTMOSTs,” IEEE J. Solid- State Circuits, vol. 34, no. 7, pp. 949–955, July 1999.

  2. H.F. Achigui, C.J.B. Fayomi, and M. Sawan, “1 V DTMOS based class AB operational amplifier: Implementation and experimental results.” to appear, IEEE J. Solid-State Circuits, vol. 41, no. 11, Nov. 2006.

  3. S. Mallya and J.H. Nevin, “Design procedures for a fully differential folded-cascode CMOS operational amplifier,” IEEE J. Solid-State Circuits, vol. 24, no. 6, pp. 1737–1740, Dec. 1989.

    Article  Google Scholar 

  4. H.F. Achigui, M. Sawan, and C.J.B. Fayomi, “A 1 V low power, low noise DTMOS based NIRS front-end receiver,” in Proc. IIIS WMSCI conf., vol. 6, pp. 56–59, July 2005.

  5. Z. Czarnul, et al., “Design of fully balanced analog systems based on ordinary and/or modified single-ended opamps,” Trans. IEICE, vol. E82-A, no. 2, pp. 256–270, Feb. 1999.

    Google Scholar 

  6. A.J. López-Martín, A. Carlosena, and J. Ramirez-Angulo, “Very low voltage MOS translinear loops based on flipped voltage followers,” Analog Integrated Circuits and Signal Processing, vol. 40, no. 1, pp. 71–74, July 2004.

    Article  Google Scholar 

Download references

Acknowledgments

The authors would like to acknowledge the financial support of the Natural Sciences and Engineering Research Council of Canada (NSERC), the Microsystems Strategic Alliance of Quebec (ReSMiQ), and CMC Microsystems.

Author information

Authors and Affiliations

  1. PMC-Sierra, 3333, Boulevard Graham, Bureau 500, Mont-Royal (Québec), H3R 3L5, Canada

    Hervé Facpong Achigui

  2. Polystim Neurotechnologies Laboratory, Electrical Engineering Department, Ecole Polytechnique de Montréal, Québec, Canada

    Mohamad Sawan

  3. Wireless Smart Devices Laboratory, Computer Science Department, Université du Québec à Montréal, Québec, Canada

    Christian Jésus B. Fayomi

Authors
  1. Hervé Facpong Achigui
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Mohamad Sawan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Christian Jésus B. Fayomi
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hervé Facpong Achigui.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Achigui, H.F., Sawan, M. & Fayomi, C.J.B. 1 V fully balanced differential amplifiers: Implementation and experimental results. Analog Integr Circ Sig Process 53, 19–25 (2007). https://doi.org/10.1007/s10470-006-9002-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10470-006-9002-z

Keywords

Search

Navigation