一种基于音频应用的ΣΔpower DAC研究和实现  

Design and Realization of A ΣΔPower DAC For Audio Application

作　　者：黄薇[1] 郑士源 李挥[1] 

机构地区：[1]北京大学深圳研究生院信息学院微电子系,广东深圳518055 [2]安凯开曼公司,广东深圳518057

出　　处：《电声技术》2007年第B06期20-23,共4页Audio Engineering

基　　金：信息产业部电子发展基金资助

摘　　要：介绍了一种应用在音频系统的ΣΔpower DAC。对整个ΣΔpower DAC的设计进行了详细的介绍,实际的硬件用Synopsys工具进行了完整的电路设计、仿真和版图设计。在MP3中得到实际应用,音质效果良好。A high precision sigma-delta power digital-to-analog converter has been designed for audio application. Some keys of the design, circuit details and simulation results are presented in this paper. Circuit of the sigmadelta power DAC has been designed, simulated and implemented by Synopsys tools. The design has been adopted in MP3 products. The performance is perfect.

关 键 词：∑△数/模转换器 ∑△调制器 过采样 半带滤波器 class—D放大器 

分 类 号：TN79[电子电信—电路与系统]