| 一种高速高宽带主从式采样保持电路 |
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| 引用本文： | 丁浩,王建业,刘伟,熊永忠. 一种高速高宽带主从式采样保持电路[J]. 西安电子科技大学学报(自然科学版), 2018, 45(4): 123-128. DOI: 10.3969/j.issn.1001-2400.2018.04.022 |
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| 作者姓名： | 丁浩 王建业 刘伟 熊永忠 |
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| 作者单位： | (1. 空军工程大学 研究生院，陕西 西安 710000；2. 成都聚利中宇科技有限公司，四川 成都 610200) |
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| 摘 要： | 基于0.13μm SiGe BiCMOS工艺设计并实现了一种新型高速高宽带主从式采样保持电路．该电路采用PMOS源极跟随器作输入级实现了直流耦合，使得低频、低偏置电压信号也可以被正常采样．采用Cherry-Hooper放大器将带宽提升至18GHz．通过主从式采样结构和交叉耦合电容消除了信号馈通，使用互补三极管抵消了时钟馈通的影响，将无杂散动态范围控制在33～38dB．对比结果表明，这种设计方案在带宽方面具有较大的优势，并且具有较高的采样率．
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| 关 键 词： | 高速高宽带 主从式采样 采样保持电路 信号馈通 时钟馈通 模数转换器 |
| 收稿时间： | 2017-11-08 |
High-speed high-broadband master-slave sampling and hold circuit |
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| DING Hao,WANG Jianye,LIU Wei,XIONG Yongzhong. High-speed high-broadband master-slave sampling and hold circuit[J]. Journal of Xidian University, 2018, 45(4): 123-128. DOI: 10.3969/j.issn.1001-2400.2018.04.022 |
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| Authors: | DING Hao WANG Jianye LIU Wei XIONG Yongzhong |
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| Affiliation: | (1. School of Graduate, Air Force Engineering Univ., Xian 710000, China;2. Chengdu Chipzone Tech Co., Ltd., Chengdu 610200, China) |
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| Abstract: | This paper presents a new-style high-speed broadband master-slave sampling and hold circuit based on the 0.13μm SiGe BiCMOS. In order to realize DC coupling and sample the low-frequency low-offset-voltage signal, the PMOS source follower is used in the input stage. The Cherry-Hooper structure is used to expand the bandwidth up to 18GHz. Signal feedthrough is cancelled by the master-slave sampling structure and cross-coupled capacitors. Clock feedthrough is attenuated by complementary bipolar transistors. The spurious free dynamic range is 33～38dB. Comparison results show that the proposed circuit has a big advantage in bandwidth and is able to sample at a high sampling rate. |
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| Keywords: | high-speed and high-broadband master-slave sampling structure sample-and-hold circuit signal feedthrough clock feedthrough analog-to-digital converter |
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