A sixth-order 4-2 SMASH CIFF complex bandpass ΔΣ modulator with delaying digital input feedforward

Chien Hung Kuo*, Hung Jing Lai, Deng Yao Shi

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

摘要

In this paper, a sixth-order sturdy multi-stage noise shaping (SMASH) bandpass delta-sigma (ΔΣ) modulator [1] with delaying digital input feedforward (DFF) structure [2,3] is presented. The second-order ΔΣ modulator with cascade integrators and distributed feedforward (CIFF) [4] is utilized in each stage to reduce the signal swing. Hence, the requirement of opamp and the power consumption of circuits can be reduced due to the suppression of the signal swing and the discarding of the digital cancellation filters. One pair of complex zeros is designed within signal bandwidth to effectively suppress the noise floor of the presented modulator. The sub-sampling technique is adopted to reduce the clock frequency and the requirement of opamp. Simulation results confirm the feasibility of the proposed SMASH CIFF bandpass ΔΣ modulator with delaying DFF structure. The proposed bandpass ΔΣ modulator compared to the single-loop AFF structure, the signal-to-noise plus distortion ratio (SNDR) could be increased by 12 dB, and the dynamic range (DR) could be extended by roughly 15 dB in a 200 kHz of signal bandwidth centered at 10.7 MHz.

原文英語
主出版物標題ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
主出版物子標題Nano-Bio Circuit Fabrics and Systems
頁面305-308
頁數4
DOIs
出版狀態已發佈 - 2010
事件2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, 法国
持續時間: 2010 五月 302010 六月 2

出版系列

名字ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

其他

其他2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
國家/地區法国
城市Paris
期間2010/05/302010/06/02

ASJC Scopus subject areas

  • 硬體和架構
  • 電氣與電子工程

指紋

深入研究「A sixth-order 4-2 SMASH CIFF complex bandpass ΔΣ modulator with delaying digital input feedforward」主題。共同形成了獨特的指紋。

引用此