• DocumentCode
    993694
  • Title

    CMOS exponential-control variable gain amplifiers

  • Author

    Liu, W. ; Liu, S.-I. ; Wei, S.-K.

  • Author_Institution
    Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
  • Volume
    151
  • Issue
    2
  • fYear
    2004
  • fDate
    4/12/2004 12:00:00 AM
  • Firstpage
    83
  • Lastpage
    86
  • Abstract
    New CMOS exponential-control variable-gain amplifiers (VGAs) are presented. The control signal can be either current-mode or voltage-mode. Since no multiplier is needed in the proposed circuits, the proposed VGAs can be very compact. For the case of supply voltages VDD=|VSS|=1.5 V, the power dissipation is only 0.48 mW. The gain control range of the proposed VGA can be 30 dB. The proposed circuits have been fabricated in a 0.5 μm n-well CMOS process. Experimental results are given to confirm the feasibility of the proposed VGAs, which are expected to be useful in analogue signal processing applications.
  • Keywords
    CMOS analogue integrated circuits; amplifiers; automatic gain control; 0.48 mW; 0.5 micron; 1.5 V; CMOS exponential control variable gain amplifiers; current-mode control signal; gain control range; n-well CMOS process; power dissipation; voltage-mode control signal;
  • fLanguage
    English
  • Journal_Title
    Circuits, Devices and Systems, IEE Proceedings -
  • Publisher
    iet
  • ISSN
    1350-2409
  • Type

    jour

  • DOI
    10.1049/ip-cds:20040111
  • Filename
    1300989
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=993694