Title :
A current conveyor design in wide bandwidth isolation amplifier
Author :
Lin, Chin E. ; Hou, An Sang ; Hsu, Kai Shun
Author_Institution :
Dept. of Electr. Eng., National Changhua Univ. of Educ., Taiwan
Abstract :
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.
Keywords :
amplifiers; current conveyors; isolation technology; opto-isolators; current conveyor design; dual-channel optocoupler; high gain feedback technique; linear transfer characteristic; pole-zero compensation; wide bandwidth isolation amplifier; Bandwidth; Coupling circuits; Current measurement; Light emitting diodes; Mathematical model; Optical amplifiers; Optical coupling; Time measurement; Transfer functions; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2003. IMTC '03. Proceedings of the 20th IEEE
Print_ISBN :
0-7803-7705-2
DOI :
10.1109/IMTC.2003.1207905
