| 基于16 bit Sigma-Delta模数转换器的数字滤波器设计 |
| |
| 引用本文： | 赵宏亮, 刘兴辉, 赵毅强,.基于16 bit Sigma-Delta模数转换器的数字滤波器设计[J].电子器件,2008,31(4). |
| |
| 作者姓名： | 赵宏亮 刘兴辉 赵毅强 |
| |
| 作者单位： | 辽宁大学物理学院,沈阳,110036 |
| |
| 摘 要： | 介绍了基于64倍过采样sigma-delta模数转换器的多级抽取滤波器设计.通过采用低功耗的多相分解梳状滤波器结构来代替传统的CIC滤波器结构,使得梳状滤波器部分的功耗降低近5倍.通过对滤波器电路结构的优化,可节省35%的芯片面积占用量.经过仿真及FPGA验证,该滤波器的信噪比达到99 dB,可以实现16位精度模数转换器的设计要求.
|
| 关 键 词： | sigma-delta调制器 数字滤波器 FIR抽取滤波器 |
Digital Filter Design for 16 bit Sigma-Delta A/D Convertor |
| |
| ZHAO Hong-liang,LIU Ying-hui,ZHAO Yi-qiang.Digital Filter Design for 16 bit Sigma-Delta A/D Convertor[J].Journal of Electron Devices,2008,31(4). |
| |
| Authors: | ZHAO Hong-liang LIU Ying-hui ZHAO Yi-qiang |
| |
| Affiliation: | ZHAO Hong-liang,LIU Ying-hui,ZHAO Yi-qiang(College of Physics,Liaoning University,Shenyang 110036,China) |
| |
| Abstract: | This paper introduces a class of multi-stage FIR decimators for sigma-delta analog-to-digital convertor.By using the low power polyphase comb filters structure,the proposed comb filter has 5 times less power consuming compared to conventional CIC filter.And by optimizing the structure of the circuit,it can save 35% chip area,leading to low cost and low power consumption.The SNR of the filter is 99 dB,and it can realize 16 bits resolution A/D convertor. |
| |
| Keywords: | sigma-delta modulator digital filter FIR decimation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子器件》浏览原始摘要信息 |
|
点击此处可从《电子器件》下载全文 |
|
