Large bandwidth op-amp based white noise current source

被引：4
作者：
Giusi, Gino [1 ]
Scandurra, Graziella [1 ]
Ciofi, Carmine [1 ]
机构：
[1] Univ Messina DIECII, I-98166 Messina, Italy
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 02期
关键词：
LOW-FREQUENCY NOISE; TRANSIMPEDANCE AMPLIFIER; HIGH-SENSITIVITY;
D O I：
10.1063/1.4864121
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Electrical noise sources are basic building blocks in many measurement and instrumentation applications and in communication systems. In this paper, we propose a quite simple topology for the realization of a programmable, wide bandwidth, white noise current source that requires only two resistors and one operational amplifier. We validate the proposed approach by means of SPICE simulations and demonstrate, by means of proper measurements, the capability of generating a flat current noise spectrum in a frequency range up to four decades from a few Hz up to 100 kHz. (C) 2014 AIP Publishing LLC.
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页数：7
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