A 16 bit Stereo Audio ΣΔ A/D Converter

一种16位音频ΣΔA/D转换器(英文)

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摘要 A 16 bit stereo audio novel stability fifth-order ∑△ A/D converter that consists of switched capacitor ∑△ modulators, a decimation filter, and a bandgap circuit is proposed. A method for the stabilization of a high order single stage ∑△ modulator is also proposed. A new multistage comb filter is used for the front end decimation filter. The ∑△ A/D converter achieves a peak SNR of 96dB and a dynamic range of 96dB. The ADC was implemented in 0. 5μm 5V CMOS technology. The chip die area occupies only 4. 1mm × 2.4mm and dissipates 90mW. 提出了一种16位立体声音频新型稳定的5阶ΣΔA/D转换器.该转换器由开关电容ΣΔ调制器、抽取滤波器和带隙基准电路构成.提出了一种新的稳定高阶调制器的方法和一种新的梳状滤波器.采用0.5μm5V CMOS工艺实现ΣΔA/D转换器.ΣΔA/D转换器可以得到96dB的峰值SNR,动态范围为96dB.整个芯片面积只有4.1mm×2.4mm,功耗为90mW.

作者陈雷赵元富高德远文武王宗民朱小飞

机构地区西北工业大学航空微电子中心北京微电子技术研究所

出处《Journal of Semiconductors》 EI CAS CSCD 北大核心 2006年第7期1183-1188,共6页 半导体学报（英文版）

基金十五国防预研资助项目(批准号:41308010307)~~

关键词 ∑△ A/D converter switched capacitor STABILITY decimation filter bandgap circuits ∑△A/D转换器开关电容稳定性抽取滤波器带隙基准电路

分类号 TN792 [电子电信—电路与系统]

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Journal of Semiconductors

2006年第7期

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A 16 bit Stereo Audio ΣΔ A/D Converter

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