• DocumentCode
    497959
  • Title

    A 5th-order delta-sigma modulator with single-opamp resonator

  • Author

    Matsukawa, Kazuo ; Mitani, Yosuke ; Takayama, Masao ; Obata, Koji ; Dosho, Shiro ; Matsuzawa, Akira

  • Author_Institution
    Strategic Semiconductor Development Center, Panasonic Corporation, 3-1-1, Yagumo-Nakamachi, Moriguchi, Osaka, 570-8501, Japan
  • fYear
    2009
  • fDate
    16-18 June 2009
  • Firstpage
    68
  • Lastpage
    69
  • Abstract
    A new circuit configuration realizing 2nd-order resonator with one operational amplifier is applied to a 5th-order deltasigma (ΔΣ) modulator. The proposed resonator enables us to any kinds of 2nd-order transfer function, which means that the resonator can realize a single feedback modulator with feed forward compensation[1,2]. Collaborating with other two improved features of a kickback relaxation filter and a simple resistor adder, we fabricated the highly efficient 5th-order ΔΣ modulator with only three opamps, whose FOM was 0.24 pJ/conv.
  • Keywords
    Adders; Circuits; Collaboration; Delta modulation; Feedback; Feeds; Operational amplifiers; Resistors; Resonator filters; Transfer functions;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    VLSI Circuits, 2009 Symposium on
  • Conference_Location
    Kyoto, Japan
  • Print_ISBN
    978-1-4244-3307-0
  • Electronic_ISBN
    978-4-86348-001-8
  • Type

    conf

  • Filename
    5205306
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=497959