宽带宽隔离放大器中的电流输送设计

Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412) Pub Date : 2003-05-20 DOI:10.1109/IMTC.2003.1207905

C.E. Lin, A. Hou, Kai Shun Hsu

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引用次数: 4

摘要

本文采用双通道光耦合器和电流传送带来实现宽带隔离放大器。采用高增益反馈技术和极零补偿技术克服了光耦固有的非线性特性，获得了良好的瞬态响应。其带宽高达563 kHz，输出响应呈现线性传输特性。提出了隔离放大器的数学模型。通过实验验证了其动态响应和静态特性。

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A current conveyor design in wide bandwidth isolation amplifier

In this paper, the dual-channel optocoupler and current conveyors are employed to achieve the wide bandwidth isolation amplifier. The high gain feedback technique and pole-zero compensation are applied to overcome the inherent nonlinear characteristics of optocouplers and to obtain a good transient response. Its bandwidth is up to 563 kHz and the output response exhibits linear transfer characteristics. The mathematical model of proposed isolation amplifier is proposed. The dynamic responses and static characteristics are also demonstrated with experimental results.

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Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412)

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