舰船电子工程2025，Vol.45Issue(4)：91-96,6.DOI:10.3969/j.issn.1672-9730.2025.04.020
连续时间Sigma-Delta调制器的建模和低功耗设计
Modeling and Low-power Design of Continuous-time Sigma-Delta Modulator
摘要
Abstract
By overcoming the speed limitation of discrete-time Sigma-Delta modulators,continuous-time Sigma-Delta modu-lators have received widespread attention in the field of broadband communications.Furthermore,the continuous-time Sigma-Delta modulators provide possible solutions to low-power design of narrow-to-moderate bandwidth high resolution ADCs.In this paper,through Simulink modeling and analysis of the non-ideal factors of the composing modules of a third-order continuous-time Sig-ma-Delta,the lowest specifications of the modules to meet the accuracy requirements are derived.Then,based on 0.18 μm CMOS SMIC process and under the 1.8 V power supply voltage,the transistor level circuit of the modulator is designed.The results show that with 1 MHz bandwidth,the in-band signal-to-noise ratio of the modulator output signal is 76.2 dB,and the total power con-sumption is 3 mW.关键词
CT Sigma-Delta调制器/Simulink建模/低功耗设计Key words
CT Sigma-Delta modulator/Simulink modeling analysis/low-power design分类
信息技术与安全科学引用本文复制引用
卢丛远,卜刚..连续时间Sigma-Delta调制器的建模和低功耗设计[J].舰船电子工程,2025,45(4):91-96,6.基金项目
江苏省自然科学基金项目(编号:BK2012792)资助. （编号:BK2012792）
