用于CMOS图像传感器的12位低功耗单斜坡模数转换器设计

doi:10.3969/j.issn.0372-2112.2013.02.023

电子学报 ›› 2013, Vol. 41 ›› Issue (2): 352-356.DOI: 10.3969/j.issn.0372-2112.2013.02.023

用于CMOS图像传感器的12位低功耗单斜坡模数转换器设计

唐枋, 唐建国

重庆三峡学院电子与信息工程学院,重庆 404000

收稿日期:2011-05-25 修回日期:2012-11-06 出版日期:2013-02-25
- 通讯作者:
- 唐建国
- 作者简介:
- 唐枋 男,1983年10月生于重庆.2006年获得北京交通大学工科学士学位.现于香港科技大学工学院攻读博士学位.现任重庆三峡学院客座教授. E-mail:icdetf@ust.hk
- 基金资助:
- 重庆三峡学院基金 (No.11ZZ-003)

12Bit Low Power Single Slope ADC Design for CMOS Image Sensor

TANG Fang, TANG Jian-guo

College of Electronic and Information Engineering, Chong Qing Three Gorges University, Chongqing 404000, China

Received:2011-05-25 Revised:2012-11-06 Online:2013-02-25 Published:2013-02-25
- Supported by:
- Foundation of Chongqing Three Gorges University (No.11ZZ-003)

摘要/Abstract

摘要： 本文提出了一种应用于CMOS图像传感器中的高精度低功耗单斜坡模数转换器(single slope analog-to-digital converter)设计方案.该ADC方案由可变增益放大器、前置预放大器和动态锁存比较器组成.相比现有的设计方案,本文提出的电路在不牺牲噪声性能的前提下,具有更低的功耗和更小的芯片面积.通过集成列并行的单斜坡模数转换器在最新设计的高精度高速CMOS图像传感器设计中,实验结果证明了设计的有效性.

关键词: 单斜坡模数转换器, CMOS图像传感器, 低噪声, 低功耗

Abstract: A high quantization resolution and low power consumption single slope ADC scheme,for CMOS image sensor applications is proposed.The proposed scheme is composed of the variable gain amplifier,preamplifier and the dynamic latch comparator.Compared to the prior art structure,the proposed circuit can achieve a reasonable noise performance,consume less power and occupy smaller chip area.This proposed ADC is implemented as a column-parallel ADC array inside a fabricated CMOS image sensor chip.The experimental results verify the conception proposed in this paper.

Key words: single slope ADC, CMOS image sensor, low noise, low power

中图分类号:

TN402

唐枋, 唐建国. 用于CMOS图像传感器的12位低功耗单斜坡模数转换器设计[J]. 电子学报, 2013, 41(2): 352-356.

TANG Fang, TANG Jian-guo . 12Bit Low Power Single Slope ADC Design for CMOS Image Sensor[J]. Acta Electronica Sinica, 2013, 41(2): 352-356.

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用于CMOS图像传感器的12位低功耗单斜坡模数转换器设计

12Bit Low Power Single Slope ADC Design for CMOS Image Sensor

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