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CMOS兼容的ISFET传感器模型和测量电路研究
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作者 王阳 刘高平 +1 位作者 郭锋 尹湘源 《传感器与微系统》 CSCD 北大核心 2007年第2期19-20,24,共3页
随着CMOS工艺的不断发展,将离子敏场效应晶体管(ISFET)传感器与CMOS技术相结合,以达到提高集成度、降低成本、减小系统尺寸、提高系统可靠性。在对与CMOS工艺兼容的ISFET传感器结构模型分析的基础上,研究了一种测量电路,它具有有利于消... 随着CMOS工艺的不断发展,将离子敏场效应晶体管(ISFET)传感器与CMOS技术相结合,以达到提高集成度、降低成本、减小系统尺寸、提高系统可靠性。在对与CMOS工艺兼容的ISFET传感器结构模型分析的基础上,研究了一种测量电路,它具有有利于消除体效应的影响、减少共模噪声的影响、克服温度漂移等优点。对该测量电路进行模拟仿真,得到输出电压与pH值之间的关系图,结果表明:其结果与理论模型仿真值基本吻合。 展开更多
关键词 isfet传感器 CMOS工艺 pH值 测量电路
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临床医学需要ISFET传感器 被引量:4
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作者 张乾生 《中国医疗器械杂志》 CAS 1997年第2期107-109,共3页
关键词 isfet传感器 结构 电原理 临床医学
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A High Precision CMOS Opamp Suitable for ISFET Readout 被引量:1
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作者 张翀 杨海钢 魏金宝 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2008年第4期686-692,共7页
This paper presents a high precision CMOS opamp suitable for ISFET readout. The opamp is tailored to provide a constant bias condition for ISFET as part of the readout circuits and,hence,is compatible for single chip ... This paper presents a high precision CMOS opamp suitable for ISFET readout. The opamp is tailored to provide a constant bias condition for ISFET as part of the readout circuits and,hence,is compatible for single chip integration with the sensor. A continuous time auto-zero stabilization technique is studied and employed, with the aim of suppressing the low frequency noises, including the offset voltage, 1/f noise, and temperature drift. The design is based on a 0.35μm CMOS process. With a 3.3V power supply,it maintains a DC open loop gain of more than 100dB and an offset voltage of around 11μV,while the overall power dissipation is only 1.48mW. With this opamp, a pH microsensor is constructed, of which the functionality is verified by experimental tests. 展开更多
关键词 high precision auto-zero operational amplifier isfet microsensor
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Amino Acid Sensing Using an Ion-Sensitive Field-Effect Transistor 被引量:3
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作者 Akimitsu Kugimiya Kaori Kohara 《Journal of Chemistry and Chemical Engineering》 2012年第5期397-400,共4页
Ion-sensitive field-effect transistor (ISFET)-based biosensor for amino acids was proposed, and the response of the sensor to amino acids was evaluated. As a molecular recognition element, aminoacyl-tRNA synthetase ... Ion-sensitive field-effect transistor (ISFET)-based biosensor for amino acids was proposed, and the response of the sensor to amino acids was evaluated. As a molecular recognition element, aminoacyl-tRNA synthetase which would be expected to have high selectivity for the corresponding amino acids was used, aminoacyl-tRNA synthetase was coated onto an ISFET electrode, and the response of the biosensor to amino acids was evaluated. The amino acid sensor for tyrosine showed a selective response to tyrosine because of the specific binding ability of aminoacyl-tRNA synthetase for tyrosine and from 300μM to 900 μM of tyrosine could be measured (r2 〉 0.969). 展开更多
关键词 Amino acid BIOSENSOR ion-sensitive field-effect transistor aminoacyl-tRNA synthetase clinical examinations food industries.
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一种适用于ISFET阵列集成检测系统的读出电路设计 被引量:1
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作者 呼红阳 毕津顺 +6 位作者 李正平 李云肖 石聪 赵爽 金虎 牛文成 岳钊 《南开大学学报(自然科学版)》 CAS CSCD 北大核心 2016年第6期69-73,79,共6页
ISFET(Ion Sensitive Field Effect Transistors)是1种可与CMOS工艺兼容的离子敏感场效应晶体管.随着传感器阵列集成度的不断增加,鉴于响应速度、功耗和成本的局限性,单个ISFET的检测电路不适于大规模集成化的检测系统.从集成化的角度出... ISFET(Ion Sensitive Field Effect Transistors)是1种可与CMOS工艺兼容的离子敏感场效应晶体管.随着传感器阵列集成度的不断增加,鉴于响应速度、功耗和成本的局限性,单个ISFET的检测电路不适于大规模集成化的检测系统.从集成化的角度出发,在分析多个读出电路的基础上,比较各自的性能特点,得出1种脉冲宽度调节读出电路,在功耗、转换速度和结构方面都有优势,适合于大规模ISFET传感器阵列的数据读取.并应用分立元件对电路性能进行了验证,通过FPGA采集读出电路输出数据,验证其具有良好的稳定性和可行性. 展开更多
关键词 isfet传感器阵列 PH检测 读出电路 FPGA
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