• DocumentCode
    1511668
  • Title

    CMOS current-mode exponential-control variable-gain amplifier

  • Author

    Chang, C.-C. ; Lin, M.-L. ; Liu, S.-I.

  • Author_Institution
    Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
  • Volume
    37
  • Issue
    14
  • fYear
    2001
  • fDate
    7/5/2001 12:00:00 AM
  • Firstpage
    868
  • Lastpage
    869
  • Abstract
    A CMOS current-mode exponential-control variable-gain amplifier is presented. It consists of a first-order current-mode pseudo-exponential circuit and a current-mode multiplier. Based on the Taylor´s series expansion, the pseudo-exponential circuit can be realised by MOSFETs in saturation. The proposed circuit has been fabricated in a 0.5 μm n-well CMOS process with a gain control range of 15 dB. The experimental results confirm the feasibility of the proposed variable-gain amplifier
  • Keywords
    CMOS analogue integrated circuits; amplifiers; current-mode circuits; gain control; 0.5 micron; CMOS VGA; CMOS variable-gain amplifier; Taylor series expansion; current-mode multiplier; current-mode pseudo-exponential circuit; exponential control; first-order pseudo-exponential circuit; n-well CMOS process;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20010593
  • Filename
    935104
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1511668