A 1.25Gsps 0.35um SiGe BiCMOS track and hold circuit

被引：0
|
作者：
Hu, Rongbin [1 ]
Zhang, Xiaoying [1 ]
机构：
[1] Econ & Technol Dev Zone, 14 Huayuan Rd, Chongqing 400060, Peoples R China
来源：
MATERIALS PROCESSING AND MANUFACTURING III, PTS 1-4 | 2013年 / 753-755卷
关键词：
track and hold circuit; ADC; NPN; feedback; 100-MS/S PIPELINED ADC;
D O I：
10.4028/www.scientific.net/AMR.753-755.2475
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, a novel track and hold circuit in 0.35um SiGe BiCMOS process is presented. Compared to the traditional one, several improvements are made on the proposed track and hold circuit. At first, multistage architecture is used, which has better isolation. Secondly, a saturation protection circuit is designed into the track and hold circuit to prevent the NPN transistor from getting into saturation state. The simulation results show that the proposed track and hold circuit has a SFDR of 82dB and SNR of 76dB at the sampling rate of 1.25Gsps. Further simulation proved that the proposed track and hold circuit has better performances than the traditional one.
引用
收藏
页码：2475 / +
页数：2
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