深圳大学学报（理工版）2010，Vol.27Issue(4)：425-427,3.
16位音频sigma-delta调制器设计
Design of a 16-bit sigma-delta modulator for digital audio signal processing
摘要
Abstract
With the design requirements of 16-bit resolution and 20 kHz bandwidth for digital audio field,a secondorder single-loop 1 bit sigma-delta modulator with an oversampling rate of 256 and a sampling frequency of 10.24MHz Was implemented in a 0.18μm CMOS process.The modulator is fully differential.It consists of a switch capacitor baSed integrator,a clock generator and a comparator.Simulation results show that the signal to noise distortion ratio(SNDR)and the dynamic range(DR)of the implemented modulator reach 94 dB and 99 dB,respectively.The sigma-delta modulator operates with a supply voltage of 1.8 V.and consumes 7.6 mW of power.关键词
集成电路技术/数字音频/sigma-delta调制器/开关电容/动态范围/信噪失真比Key words
IC technology/digital audio/sigma-delta modulator/switched capacitor/dynamic range/signal-tonoise distortion ratio分类
信息技术与安全科学引用本文复制引用
马芝,李琰,愈航,姜来,纪震..16位音频sigma-delta调制器设计[J].深圳大学学报（理工版）,2010,27(4):425-427,3.基金项目
国家自然科学基金资助项目(60901016) （60901016）
深圳市重点实验室提升发展计划资助项目(08systs08) （08systs08）
