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ADC border effect and suppression of quantization error in the digital dynamic measurement 被引量:3
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作者 白丽娜 刘海东 +7 位作者 周渭 张勇 翟鸿启 崔震健 赵明英 谷小倩 刘蓓玲 黄李贝 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期91-97,共7页
The digital measurement and processing is an important direction in the measurement and control field. The quantization error widely existing in the digital processing is always the decisive factor that restricts the ... The digital measurement and processing is an important direction in the measurement and control field. The quantization error widely existing in the digital processing is always the decisive factor that restricts the development and applications of the digital technology. In this paper, we find that the stability of the digital quantization system is obviously better than the quantization resolution. The application of a border effect in the digital quantization can greatly improve the accuracy of digital processing. Its effective precision has nothing to do with the number of quantization bits, which is only related to the stability of the quantization system. The high precision measurement results obtained in the low level quantization system with high sampling rate have an important application value for the progress in the digital measurement and processing field. 展开更多
关键词 quantization error border effect digital converter(adc)
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一种11bit流水线高速模数转换器
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作者 黄政 蔡孟冶 姜岩峰 《半导体技术》 CAS 北大核心 2024年第6期561-568,共8页
为解决流水线模数转换器(ADC)在连续工作时功耗高、电容器匹配度有限以及运算放大器大摆幅输出信号下线性度下降的问题,基于0.5μm BCD工艺,设计了一款11 bit流水线高速ADC。提出了无采样保持放大器、幅度减半和多位量化相结合的设计方... 为解决流水线模数转换器(ADC)在连续工作时功耗高、电容器匹配度有限以及运算放大器大摆幅输出信号下线性度下降的问题,基于0.5μm BCD工艺,设计了一款11 bit流水线高速ADC。提出了无采样保持放大器、幅度减半和多位量化相结合的设计方法,使ADC在大摆幅信号下有足够的线性度来处理信号,同时使电容数模转换器(DAC)的匹配精度满足ADC分辨率的要求,极大地降低了对电容阵列几何参数的匹配精度要求,具有较低的功耗。采用Cadence Virtuoso设计版图,测试结果表明,芯片的微分非线性(DNL)在-0.5~+0.5 LSB范围内,有效位数(ENOB)为10.61 bit,功耗为97 mW,获得了较好的性能。 展开更多
关键词 流水线模数转换器(adc) 幅度减半 无采样保持 线性度 多位量化 电容失配 有效位数(ENOB)
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