• DocumentCode
    1130495
  • Title

    CMOS linear programmable transconductor suitable for adjustable Gm-C filters

  • Author

    Sánchez-Rodríguez, T. ; Luján-Martínez, C.I. ; Carvajal, R.G. ; Ramírez-Angulo, J. ; López-Martín, A.

  • Author_Institution
    Univ. de Sevilla, Seville
  • Volume
    44
  • Issue
    8
  • fYear
    2008
  • Firstpage
    505
  • Lastpage
    506
  • Abstract
    A novel CMOS linear programmable transconductor is presented. It is based on a telescopic cascode operational transconductance amplifier with source degeneration implemented by means of highly linear tunable active resistors. The transconductor has been designed in a 0.5 mum CMOS technology featuring a third-order intermodulation (IM3) of -54.8 dB at 10 MHz for a 1 Vpp output voltage. Its feasibility for Gm-C filter design has been experimentally validated with a 1 MHz tunable third-order Chebyshev lowpass filter suitable for Bluetooth applications.
  • Keywords
    CMOS integrated circuits; amplifiers; low-pass filters; Bluetooth; CMOS linear programmable transconductor; adjustable Gm-C filters; linear tunable active resistors; source degeneration; telescopic cascode operational transconductance amplifier; third-order Chebyshev lowpass filter; third-order intermodulation;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20080301
  • Filename
    4489866
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1130495