• DocumentCode
    1737050
  • Title

    1.5V CMOS current reference with extended temperature operating range

  • Author

    Badillo, Dean A.

  • Author_Institution
    Semicond. Products Sector, Motorola Inc., Tempe, AZ, USA
  • Volume
    3
  • fYear
    2002
  • fDate
    6/24/1905 12:00:00 AM
  • Abstract
    Traditional bandgap based current references have restricted temperature operating range due to the limited input common mode range of the feedback amplifier. This paper introduces a modified bandgap current reference that overcomes this limitation by placing a natural device (Vth ∼ 0V) level shift stage between the amplifier and the bandgap. The circuit has been fabricated in a 0.25-μm CMOS process. It generates a reference current of 5μA with a temperature variation of 7% over an extended temperature range of -40°C to 150°C. The bandgap occupies approximately 170×80μm2 and draws 56μA from a 1.5V supply.
  • Keywords
    CMOS analogue integrated circuits; reference circuits; -40 to 150 degC; 0.25 micron; 1.5 V; 5 muA; 56 muA; CMOS; bandgap current reference; extended temperature operating range; input common mode range; level shift stage; temperature variation; CMOS process; Circuits; Dielectric substrates; MOS devices; Operational amplifiers; Photonic band gap; Resistors; Silicon; Temperature distribution; Threshold voltage;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
  • Print_ISBN
    0-7803-7448-7
  • Type

    conf

  • DOI
    10.1109/ISCAS.2002.1010194
  • Filename
    1010194
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1737050