Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Design of a Broad Band-Pass Sigma-Delta Modulator

광 대역 통과 특성을 갖는 시그마 델타 모듈레이터 설계

  • Kim, Tae-Woong (Dept. of Electronics Engineering Dongguk University) ;
  • Hwang, In-Seok (Dept. of Electronics Engineering Dongguk University)
  • 김태웅 (동국대학교 전자공학과) ;
  • 황인석 (동국대학교 전자공학과)
  • Published : 2008.06.18
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes a 8th-order single loop band-pass sigma-delta modulator that satisfies a wide bandwidth of 6MHz, which is required for a HDTV application. The proposed architecture is based on a simple analog structure that enlarges the noise shaping with a low OSR. In addition, a feedforward scheme is used to relax op-amp performance requirements. The proposed modulator has been simulated using the 0.18um 1.8v TSMC technology. The simulation results show that the bandwidth is 6MHz and SNQR is 70dB.

Keywords