• DocumentCode
    2656579
  • Title

    A low-voltage bandgap reference with resistive subdivision

  • Author

    Xing, Xu ; Xichuan, Wang ; Cuiying, Si

  • Author_Institution
    Microelectron. Res. & Dev. Center, Shanghai Univ.
  • fYear
    2006
  • fDate
    27-28 June 2006
  • Firstpage
    12
  • Lastpage
    15
  • Abstract
    In this paper, a sub IV bandgap voltage reference (BGR) with resistive subdivision in CMOS technology is described. The proposed topology is based on the combination of two elements´ voltages of opposite temperature coefficients. By using resistive subdivision methods, maximum input voltage of a p-channel input operational amplifier can be reduced and the problem of sub IV supply voltage is solved without complex low supply voltage amplifier. Inserting a capacitance Cc to ground at VREF can result in an improvement in power supply rejection ratio. The proposed circuit was verified by spectre simulations, using standard 0.25 mum CMOS process, and the results show that the presented bandgap reference can successfully operate at sub IV supply and has a temperature coefficient of 25ppm/degC over a temperature range from 0degC to 100degC. The power supply rejection ratio (PSRR) is high at low frequencies, and an added Cc is helpful for PSRR at high frequencies
  • Keywords
    CMOS analogue integrated circuits; energy gap; integrated circuit design; low-power electronics; reference circuits; 0 to 100 C; 0.25 micron; CMOS technology; low-voltage band gap reference; power supply rejection ratio; resistive subdivision; sub IV bandgap voltage reference; CMOS technology; Capacitance; Frequency; Land surface temperature; Low voltage; Operational amplifiers; Photonic band gap; Power supplies; Temperature distribution; Topology;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    High Density Microsystem Design and Packaging and Component Failure Analysis, 2006. HDP'06. Conference on
  • Conference_Location
    Shanghai
  • Print_ISBN
    1-4244-0488-6
  • Type

    conf

  • DOI
    10.1109/HDP.2006.1707557
  • Filename
    1707557