ULTRA LOW-NOISE PREAMPLIFIER FOR LOW-FREQUENCY NOISE MEASUREMENTS IN ELECTRON DEVICES

被引：50

作者：

NERI, B ^{[1
]}

PELLEGRINI, B ^{[1
]}

SALETTI, R ^{[1
]}

机构：

[1] CNR,CTR STUDIO METODI & DISPOSITIVI RADIOTRASMISS,I-56126 PISA,ITALY

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1991年 / 40卷 / 01期

关键词：

D O I：

10.1109/19.69939

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The design and realization of an ultra low-noise high-input impedance amplifier for low-frequency noise measurements in electronic devices is presented. Special care is devoted to the solution of typical problems encountered in the design of low-noise low-frequency equipment, such as power supply noise and temperature fluctuations. The preamplifier has a band width of over 7 decades with a low-frequency roll-off of 4 mHz. The noise characteristics obtained are sensibly better than those of commercial preamplifiers commonly adopted in low-frequency noise measurements. The application of this preamplifier to the realization of standard 1/f-gamma noise generators is also presented.

引用

页码：2 / 6

页数：5

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