• DocumentCode
    2413295
  • Title

    A 94dB SFDR 78dB DR 2.2MHz BW Multi-bit Delta-Sigma Modulator with Noise Shaping DAC

  • Author

    Chen, Jianzhong ; Xu, Yong Ping

  • Author_Institution
    Nat. Univ. of Singapore, Singapore
  • fYear
    2007
  • fDate
    16-19 Sept. 2007
  • Firstpage
    69
  • Lastpage
    72
  • Abstract
    A 5th - order multi-bit lowpass delta-sigma modulator employs a proposed noise shaping dynamic element matching (NSDEM) technique to remove DAC non-linearity error. Unlike most existing DEMs trading SNR for SFDR, the proposed technique improves both SFDR and SNR The noise shaping is incorporated in the first integrator of the loop filter without any additional analog circuitry. The fabricated modulator chip achieves 94dB SFDR and 78dB DR in 2.2 MHz BW and meets the ADSL2+ specifications.
  • Keywords
    delta-sigma modulation; digital subscriber lines; ADSL2+ specification; bandwidth 2.2 MHz; lowpass delta-sigma modulator; multi-bit delta-sigma modulator; noise shaping DAC; noise shaping dynamic element matching technique; Circuits; Degradation; Delta modulation; Filters; Noise reduction; Noise shaping; OFDM; Quantization; Signal to noise ratio; Transfer functions;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
  • Conference_Location
    San Jose, CA
  • Print_ISBN
    978-1-4244-1623-3
  • Electronic_ISBN
    978-1-4244-1623-3
  • Type

    conf

  • DOI
    10.1109/CICC.2007.4405683
  • Filename
    4405683
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2413295