上海交通大学 电子信息与电气工程学院,上海,200240
纸质出版:2018
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程天元, 吴春东, 王国兴. 一种全集成交替型双积分ADC的设计[J]. 微电子学与计算机, 2018, 35(10): 62-66.
CHENG Tian-yuan, WU Chun-dong, WANG Guo-xing. A Design of Fully Integrated Alternating Dual Slope ADC[J]. 2018, 35(10): 62-66.
本文提出了一个应用于生物医学的全集成小面积的交替型双积分模数转换器
将双积分ADC原本单一的积分时间窗口变成多个时间窗口
使正反积分交替进行
极大地减小了积分器所需的RC时间常数
同时节省了大量的面积
有利于实现芯片的全集成.为了消除积分器失调的影响和降低功耗
使用了自动调零结构以及动态比较器.该10 bit双积分ADC在0.35 μm工艺下设计
面积为0.16 mm.在2 V电源电压
418 S/s采样频率下
ADC的功耗为18.5 μA
Matlab仿真结果显示有效位数为9.77 bit.
This paper presents a fully on-chip small area dual slope ADC for biomedical application. Base on the proposed multi-window dividing method
the RC time constant of the integrator is greatly reduced
which helps the ADC to save large amount of area for the on-chip capacitor. The auto-zero technique is applied to reduce the offset of integrator
and dynamic comparator is used to save power. The proposed 10 bit dual slope ADC has a sampling rate of 418S/s at 2 V supply voltage
consuming 18.5 μA current. The proposed dual slope ADC is implemented in 0.35 μm CMOS process occupying an area of 0.16 mm. Matlab simulation results show that the effective number of bits (ENOB) for the ADC is 9.77 bit.
Jafari H, Soleymani L, Genov R. 16-channel CMOS impedance spectroscopy DNA analyzer with dual-slope multiplying ADCs[J]. IEEE transactions on biomedical circuits and systems, 2012, 6(5): 468-478. DOI: 468
Levine, Peter M. Active CMOS sensor array for electrochemical biomolecular detection[J]. IEEE Journal of Solid-State Circuits, 2008, 43 (8): 1859-1871. DOI: 1859
Shetty D, Renukaswamy P T. A 11-bit integrating analog to digital converter[C]//Microelectronics. Villach, Austria, IEEE, 2017: 19-23. DOI: 10.1109/Austrochip.2016.015
曹细武, 邓亲恺.心电图各波的频率分析[J].中国医学物理学杂志, 2001, 18(1): 46-48. DOI: 46
Dehennis A D, Mailand M, Grice D, et al. A near-field-communication (nfc) enabled wireless fluorimeter for fully implantable biosensing applications[C]//Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2013 IEEE International. San Francisco, CA, USA, IEEE, 2013: 298-299.
Shan H, Rausch S, Jou A, et al. A low power programmable dual-slope ADC for single-chip RFID sensor nodes[C]//Silicon Monolithic Integrated Circuits in RF Systems (SiRF), 2017 IEEE 17th Topical Meeting on. [s.l]. IEEE, 2017: 118-120.
杨赘秀, 罗静芳, 宁宁, 等.新型高速低功耗CMOS预放大锁存比较器[J].微电子学, 2006, 36(2): 213-216. DOI: 213
汪正锋, 宁宁, 吴霜毅, 等.一种基于电压窗口技术的超低功耗SAR ADC[J].电子学报, 2014, 44(1): 211-215. DOI: 211
杜微.一种新型高速高分辨率双积分A/D转换器的设计与研究[D].成都: 电子科技大学, 2016.
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