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...

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Published inProceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412) Vol. 2; pp. 1013 - 1017 vol.2
Main Authors Lin, C.E., An Sang Hou, Kai Shun Hsu
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Bandwidth
Coupling circuits
Current measurement
Light emitting diodes
Mathematical model
Optical amplifiers
Optical coupling
Time measurement
Transfer functions
Voltage
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Summary: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.
ISBN:0780377052
9780780377059
ISSN:1091-5281
DOI:10.1109/IMTC.2003.1207905