SEMICONDUCTOR INTEGRATED CIRCUITS

A 1-V 60-μW 85-dB dynamic range continuous-time third-order sigma–delta modulator

Li Yuanwen, Qi Da, Dong Yifeng, Xu Jun and Ren Junyan

+ Author Affiliations

PDF

Abstract: A 1-V third order one-bit continuous-time (CT) Σ∆ modulator is presented. Designed in the SMIC mixed-signal 0.13-µm CMOS process, the modulator utilizes active RC integrators to implement the loop filter. An efficient circuit design methodology for the CT Σ∆ modulator is proposed and verified. Low power dissipation is achieved through the use of two-stage class A/AB amplifiers. The presented modulator achieves 81.4-dB SNDR and 85-dB dynamic range in a 20-kHz bandwidth with an over sampling ratio of 128. The total power consumption of the modulator is only 60 μW from a 1-V power supply and the prototype occupies an active area of 0.12 mm2.

Key words: analog-to-digital converter

  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 4099 Times PDF downloads: 2708 Times Cited by: 0 Times

    History

    Received: 18 August 2015 Revised: 30 July 2009 Online: Published: 01 December 2009

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Li Yuanwen, Qi Da, Dong Yifeng, Xu Jun, Ren Junyan. A 1-V 60-μW 85-dB dynamic range continuous-time third-order sigma–delta modulator[J]. Journal of Semiconductors, 2009, 30(12): 125011. doi: 10.1088/1674-4926/30/12/125011 Li Y W, Qi D, Dong Y F, Xu J, Ren J Y. A 1-V 60-μW 85-dB dynamic range continuous-time third-order sigma–delta modulator[J]. J. Semicond., 2009, 30(12): 125011. doi:  10.1088/1674-4926/30/12/125011.Export: BibTex EndNote
      Citation:
      Li Yuanwen, Qi Da, Dong Yifeng, Xu Jun, Ren Junyan. A 1-V 60-μW 85-dB dynamic range continuous-time third-order sigma–delta modulator[J]. Journal of Semiconductors, 2009, 30(12): 125011. doi: 10.1088/1674-4926/30/12/125011

      Li Y W, Qi D, Dong Y F, Xu J, Ren J Y. A 1-V 60-μW 85-dB dynamic range continuous-time third-order sigma–delta modulator[J]. J. Semicond., 2009, 30(12): 125011. doi:  10.1088/1674-4926/30/12/125011.
      Export: BibTex EndNote

      A 1-V 60-μW 85-dB dynamic range continuous-time third-order sigma–delta modulator

      doi: 10.1088/1674-4926/30/12/125011
      • Received Date: 2015-08-18
      • Accepted Date: 2009-04-14
      • Revised Date: 2009-07-30
      • Published Date: 2009-12-04

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return