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一种可重构的24bitΣ-Δ调制器的设计 被引量：5

Design of a 24bit Re-configurable Sigma-Delta Modulator
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摘要 给出了一种仅用加法器和移位器实现的、适用于嵌入式FPGA应用的,可重构的Σ-Δ调制器设计。它能够被设置为3阶或5阶,并可支持不同字长(16-/18-/20-/24-bit)的PCM数据输入。过采样率为128时,经仿真验证在3阶和5阶的情况下最大信噪比分别可以达到110dB和150dB,精度为18bit和24bit,可以应用于CD,SACD和DVD等不同格式的音频解调中。 In this paper,a scheme of re-configurable Sigma-Delta Modulator （SDM） only using adders and shifters is advised, which is suitable for embedded FPGA applications. It can be configured as 3rd or 5th order SDM and it accepts 16-/18-/20-/24-bit PCM data input in. When the over sampling rate is 128, the ∑-△ modulator can achieves llOdB SNR and 150dB SNR for 3rd or 5th order SDM, respectively. The precision is 18bit and 24bit. This SDM can be used in audio demodulation of CD, SACD,DVD and so on.
作者 沈佳铭 洪亮 石春琦 张润曦 李小进 赖宗声
机构地区 华东师范大学微电子电路与系统研究所
出处 《微电子学与计算机》 CSCD 北大核心 2007年第4期159-162,共4页 Microelectronics & Computer
基金 上海应用材料基金项目(AM0513 AM0508)
关键词 ∑-△调制器 DAC 过采样 可重构 ∑-△ modulator DAC oversample re-configurable
分类号 TN4 [电子电信—微电子学与固体电子学]
  • 相关文献

参考文献7

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二级参考文献16

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共引文献4

同被引文献33

  • 1柳逊,闫娜,吴晓铁,程君侠.一种高性能运算放大器的设计[J].微电子学与计算机,2005,22(6):28-30. 被引量：19
  • 2石博雅,苗长云,李鸿强,曹晓东.G.726语音编解码器在SoPC中的实现[J].电子技术应用,2005,31(8):5-8. 被引量：2
  • 3马志欣,王宏,李鑫.语音识别技术综述[J].昌吉学院学报,2006(3):93-97. 被引量：18
  • 4黄薇,郑士源.24位高精度音频ΣΔDAC[J].微电子学与计算机,2007,24(1):15-17. 被引量：1
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引证文献5

二级引证文献2

微电子学与计算机
2007年 第4期

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