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一种超低噪声遥测地震数据采集站前置放大器的设计

石油物探

1992年 31卷第No. 1期

阅读：74

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Title

AN ULTRALOW-NOISE PREAMPLIFIER FOR TELEMETRY SEISMIC DATA ACQUISITION UNIT

单位

1. 江汉石油学院;2. 石油物探仪器公司

Organization

1. Computer Center, Jianghan Oil Institute;2. Geophysical Instrument Corporation, Oil Geophysical Prospecting Bureau

摘要

本文在对WAVE-Ⅲ和OPSElS 5520遥测地震数据采集站(ATU和RTU)的前置放大器进行对比分析的基础上,介绍了一种利用负反馈原理由集成运算放大器构成低噪声、高共模抑制比、高输入阻抗的前置放大器的设计,该放大器可用作ATU或RTU的前置放大。

Abstract

Based on the comparative analysis made on the preamplifiers of WAVE-Ⅲ ATU and OPSEIS 5520 RTU,the paper presents to the readership the contrivance of low-noise, high-common-mode-rejection ratio and high-input impedance preamplifier built up with I. C. operational amplifier,by using the negative feedback concepts. The said amplifier is tailored to ATU or RTU's preamplification.

关键词：

前置放大器; 低噪声; 高共模抑制比; 高输入阻抗;

Keywords:

Instrument Designing; Preamplifier; Low-Noise; High Common Mode Rejection Ratio; High Input Impedance;

基金项目

DOI