Analytical method to determine optimal out-of-band gain in multi-bit delta-sigma modulator

Awinash Anand, Nischal Koirala, Ramesh Pokharel, Haruichi Kanaya, Keiji Yoshida

研究成果: ジャーナルへの寄稿レター

抄録

A simple, systematic and deterministic MATLAB simulation which employs Risbo method and analytical simulation is proposed to determine the optimal out-of-band gain to achieve a maximal SNR and the maximum stable amplitude in a multi-bit delta-sigma modulator. Using the proposed method, a 128 MS/s, 2MHz signal bandwidth 4 th order 2-bit continuous-time delta-sigma modulator is designed and implemented in 0.18 μm CMOS technology to verify the concept. As a result, the modulator achieves a peak SNDR of 79.3 dB and a dynamic range of 83 dB for a 2MHz signal bandwidth (OSR = 32) while consuming only 7.8mW from 1.8V supply.

元の言語英語
ページ(範囲)1598-1603
ページ数6
ジャーナルIEICE Electronics Express
9
発行部数20
DOI
出版物ステータス出版済み - 11 19 2012

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Modulators
modulators
bandwidth
Bandwidth
MATLAB
dynamic range
CMOS
simulation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

これを引用

Analytical method to determine optimal out-of-band gain in multi-bit delta-sigma modulator. / Anand, Awinash; Koirala, Nischal; Pokharel, Ramesh; Kanaya, Haruichi; Yoshida, Keiji.

:: IEICE Electronics Express, 巻 9, 番号 20, 19.11.2012, p. 1598-1603.

研究成果: ジャーナルへの寄稿レター

Anand, Awinash ; Koirala, Nischal ; Pokharel, Ramesh ; Kanaya, Haruichi ; Yoshida, Keiji. / Analytical method to determine optimal out-of-band gain in multi-bit delta-sigma modulator. :: IEICE Electronics Express. 2012 ; 巻 9, 番号 20. pp. 1598-1603.
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