| 电化学伏安分析中放大器的低噪声设计 |
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| 引用本文： | 黄泽建,林君.电化学伏安分析中放大器的低噪声设计[J].仪器仪表学报,2005,26(5):518-521. |
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| 作者姓名： | 黄泽建 林君 |
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| 作者单位： | 吉林大学智能仪器与测控技术研究所,长春,130026 |
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| 基金项目： | 十五国家科技攻关重大课题(2001BA210A04)资助项目。 |
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| 摘 要： | 测量电化学伏安分析中微弱电流的电路系统,因被测电流是mA到nA级的微弱信号,所以低噪声是设计的关键。叙述了该系统的关键电路。通过分析放大器的输入特性参数所带来的误差影响,以及放大器的噪声估算等问题,提出了正确选择放大器芯片的思想。结果表明这是能够提高测量精度的一种有效方法。
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| 关 键 词： | 低噪声 三电极 I-V变换 En-In |
| 修稿时间： | 2003年9月1日 |
Low Noise Design of Amplifier in the Voltage-ampere Analysis of Electrochemistry |
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| Huang Zejian,Lin Jun.Low Noise Design of Amplifier in the Voltage-ampere Analysis of Electrochemistry[J].Chinese Journal of Scientific Instrument,2005,26(5):518-521. |
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| Authors: | Huang Zejian Lin Jun |
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| Abstract: | Concerning the circuit system to measure the weak current in the voltage-ampere analysis of electrochemistry,the noise is the key to this system because the current is from nA to mA.The key circuits of this system was discussed.It advanced the thought of right way to choose the OP based on the analysis of the operation amplifier problems,such as the error caused by the electrical characteristics,the noise calculation and so on.The results indicated that is an efficient method of improving the precision. |
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| Keywords: | Low noise Three-electrode I-V E n-I n |
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