A design of 12-bit full differential successive approximation ADC

Wei Gao, Lei Zhang, Xinghua Wang, Mu Yao, Peng Gao

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

A 12-bit full differential successive approximation anolog-to-digital convertor (SAR ADC) with low power dissipation is proposed in this paper. The comparator is a crucial part in SAR ADC, and its accuracy, speed and offset have an effect on the performance of ADC. In this paper, a multi-stage comparator is designed, which is composed of three stage amplifiers and a latch and the offset calibration technique is applied, too. The DAC consists of 64 unit capacitors. The circuit is designed under TSMC CMOS 0.18-mrf process. The simulation results show that under a 3.3V power supply, the performance of SNDR reaches nearly 71.25dB and the SFDR reaches nearly 80.97dB with the condition that the sampling frequency is 0.67MHz. The power consumption of SAR is about 4.5mW.

源语言英语
主期刊名International Conference on Graphic and Image Processing, ICGIP 2012
DOI
出版状态已出版 - 2013
活动4th International Conference on Graphic and Image Processing, ICGIP 2012 - Singapore, 新加坡
期限: 6 10月 20127 10月 2012

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
8768
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议4th International Conference on Graphic and Image Processing, ICGIP 2012
国家/地区新加坡
Singapore
时期6/10/127/10/12

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