| ADC中基于输入特性的动态可重构Dither结构 |
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| 引用本文： | 郭志勇,李广军,李强.ADC中基于输入特性的动态可重构Dither结构[J].微电子学,2011,41(2). |
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| 作者姓名： | 郭志勇 李广军 李强 |
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| 作者单位： | 电子科技大学,通信与信息工程学院,成都,611731 |
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| 基金项目： | 国家科技重大专项，国家863目标导向项目，预研基金资助项目，重点实验室基金资助项目，中央高校基本科研业务费资助项目 |
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| 摘 要： | 将伪随机数的宽带大幅度Dther(抖动)技术应用于高速、高精度A/D转换器(ADC)中,能够将量化噪声随机化,提高ADC的分辨率,在统计意义上减小微分非线性(DNL)误差,改善ADC的动态性能.针时流水线型ADC结构,根据各个子ADC输入信号的特点,提出动态可重构宽带大幅度Dither结构.将大幅度Dither分别引入ADC芯片内部各个子ADC中,在改善ADC动态性能的同时,使Dither动态调整更加灵活且有针对性,降低了Dither结构中DAC的位数和功耗.
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| 关 键 词： | 流水线型A/D转换器 动态可重构抖动 模拟电路 |
A Dynamic Reconfigurable Input-Dependence Dither Structure for ADC |
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| GUO Zhiyong,LI Guangjun,LI Qiang.A Dynamic Reconfigurable Input-Dependence Dither Structure for ADC[J].Microelectronics,2011,41(2). |
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| Authors: | GUO Zhiyong LI Guangjun LI Qiang |
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| Affiliation: | GUO Zhiyong,LI Guangjun,LI Qiang(Institute of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 611731,P.R.China) |
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| Abstract: | Wideband and large amplitude PN-based dither,which is widely used in high-speed and high-resolution A/D converter,can reduce DNL of ADC in statistical sense and enhance its dynamic performance.A dynamic reconfigurable dither structure with wideband and large voltage amplitude for pipelined ADC structure was proposed,which was introduced into each sub-ADC in the A/D converter.It has been demonstrated that the proposed dither structure can effectively improve performance of the ADC and make dither dynamic adj... |
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| Keywords: | Pipelined ADC Dynamic reconfigurable dither Analog circuit |
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