电流传送器
仪表放大器
电阻器
仪表(计算机编程)
共模抑制比
电子工程
运算放大器
电流反馈运算放大器
放大器
电气工程
工程类
电子线路
电流(流体)
带宽(计算)
跨阻放大器
电压
计算机科学
CMOS芯片
电信
操作系统
作者
Yehya H. Ghallab,W. Badawy,K.V.I.S. Kaler,Brent Maundy
出处
期刊:IEEE Transactions on Instrumentation and Measurement
[Institute of Electrical and Electronics Engineers]
日期:2005-10-01
卷期号:54 (5): 1941-1949
被引量:80
标识
DOI:10.1109/tim.2005.854254
摘要
This paper presents a novel current-mode instrumentation amplifier (CMIA) that utilizes an operational floating current conveyor (OFCC) as a basic building block. The OFCC, as a current-mode device, shows flexible properties with respect to other current- or voltage-mode circuits. The advantages of the proposed CMIA are threefold. First, it offers a higher differential gain and a bandwidth that is independent of gain, unlike a traditional voltage-mode instrumentation amplifier. Second, it maintains a high common-mode rejection ratio (CMRR) without requiring matched resistors, and finally, the proposed CMIA circuit offers a significant improvement in accuracy compared to other current-mode instrumentation amplifiers based on the current conveyor. The proposed CMIA has been analyzed, simulated, and experimentally tested. The experimental results verify that the proposed CMIA outperforms existing CMIAs in terms of the number of basic building blocks used, differential gain, and CMRR.
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