| 用于设计连续时间滤波器的基于混合积分器的双二阶单元 |
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| 引用本文： | 陈勇,周玉梅. 用于设计连续时间滤波器的基于混合积分器的双二阶单元[J]. 半导体学报, 2010, 31(4): 045011-4 |
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| 作者姓名： | 陈勇 周玉梅 |
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| 作者单位： | Institute;Microelectronics;Chinese;Academy;Sciences; |
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| 基金项目： | The authors would like to thank SMIC for chip fabrication support, and also thank Qiu Cong, Wang Yunfeng and Chen Chengying for helping during the measurement. |
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| 摘 要： | 摘要：提出了一种新型基于混合积分器的双二阶单元。与基于源极跟随器的双二阶单元采用正反馈综合复数极点相比，本文提出了另一种综合复数极点的机制。提出的双二阶单元采用负反馈结合不同类型积分器综合复数极点，用于设计连续时滤波器。该单元包括许多优点：电路结构简单、高增益、无寄生极点、不需要共模反馈电路和大的驱动能力。在0.18 μm CMOS 工艺上采用提出的双二阶单元实现了一个4阶巴特沃斯低通滤波器。滤波器包括测试缓冲器有源面积仅为200×170µm。提出的滤波器消耗201µW功耗，获得51dB动态范围。
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| 关 键 词： | 连续时间滤波器 单元设计 基础 混合集成 巴特沃斯低通滤波器 负反馈技术 CMOS工艺 混合积分 |
| 收稿时间： | 2009-09-29 |
| 修稿时间： | 2009-11-04 |
Mixed-integrator-based bi-quad cell for designing a continuous time filter |
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| Chen Yong and Zhou Yumei. Mixed-integrator-based bi-quad cell for designing a continuous time filter[J]. Chinese Journal of Semiconductors, 2010, 31(4): 045011-4 |
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| Authors: | Chen Yong and Zhou Yumei |
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| Affiliation: | Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China;Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | A new mixed-integrator-based bi-quad cell is proposed.An alternative synthesis mechanism of complex poles is proposed compared with source-follower-based bi-quad cells which is designed applying the positive feedback technique.Using the negative feedback technique to combine different integrators,the proposed bi-quad cell synthesizes complex poles for designing a continuous time filter.It exhibits various advantages including compact topology,high gain,no parasitic pole,no CMFB circuit,and high capability.T... |
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| Keywords: | bi-quad cell negative feedback technique continuous time filter CMOS |
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