• DocumentCode
    516693
  • Title

    A -80dB THD, 4Vpp Switched Capacitor Filter for 1.5V Battery-Operated Systems

  • Author

    Nicollini, Germano ; Nagari, A. ; Confalonieri, P. ; Crippa, C.

  • Author_Institution
    SGS-THOMSON Microelectronics, Via Olivetti 2, 20041 Agrate Brianza, Milano, Italy
  • fYear
    1994
  • fDate
    20-22 Sept. 1994
  • Firstpage
    104
  • Lastpage
    107
  • Abstract
    A fully-differential 5th order SC filter that operates from power supplies as low as 1.5V featuring a ¿80dB THD at 4Vpp output voltage is presented. A measured p-weighted noise of about 120¿Vrms leads to a dynamic range of 81.5dB. This circuit is used as reconstruction filter for a low voltage 14-bit DAC. The THD performance has been achieved thanks to a deep analysis of many distortion mechanisms and to the disclosure of a new distortion cause in sample data filters. The very low voltage operation has been possible by integrating a regulated voltage-multiplier on the same chip. The filter active area is 0.54mm2 in a 0.8¿ CMOS technology. Typical power consumption is 0.8mW at 1.5V supply.
  • Keywords
    Active filters; CMOS technology; Circuit noise; Distortion measurement; Dynamic range; Energy consumption; Low voltage; Noise measurement; Performance analysis; Power supplies;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 1994. ESSCIRC '94. Twentieth European
  • Conference_Location
    Ulm, Germany
  • Print_ISBN
    2-86332-160-9
  • Type

    conf

  • Filename
    5468531
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=516693