Two-channel amplifier for high-sensitivity voltage noise measurements
Two-channel amplifier for high-sensitivity voltage noise measurements
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DOI：
10.1063/1.2349591
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发表时间：
2006-09
期刊：
影响因子：
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通讯作者：
G. Giusi;F. Crupi;C. Ciofi;C. Pace
中科院分区：
文献类型：
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作者：
G. Giusi;F. Crupi;C. Ciofi;C. Pace
在本文中，我们提出了一种测量电压噪声源的新方法，该方法至少在原则上允许完全消除测量所用的放大器引入的噪声。该测量过程不需要测量DUT阻抗和估计放大器噪声源。与我们以前的方法相比，它的主要优点是只需要两个放大器通道。SPICE仿真和对原型电路的噪声测量验证了该方法的有效性。
In this paper we propose a new method for the measurement of a voltage noise source that allows, at least in principle, the complete elimination of the noise introduced by the amplifiers used for the measurements. This measurement procedure does not require the measurement of the DUT impedance and the estimation of the amplifier noise sources. Its main advantage with respect to our previous methods is that it requires only two amplifier channels. SPICE simulations and noise measurements on a prototype circuit demonstrate the validity of the proposed approach.