The optical coupling of analog signals

An optocoupling circuit based on the Siemens IL300 linear optocoupler and the methods to assess its static and dynamic performances are presented. It is shown that IL300, due to its built-in linearizing feedback photodiode, makes it possible to build coupling schemes that associate good linearity wi...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1996-06, Vol.43 (3), p.1672-1674
Main Authors: Simoes, J.B., Silva, R.M.C., Morgado, A.M.L.S., Correia, C.M.
Format: Article
Language:English
Subjects:
Coupling circuits
Galvanizing
Linearity
Optical coupling
Optical devices
Optical feedback
Optical pulses
Photodiodes
Spectroscopy
Voltage
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Summary:An optocoupling circuit based on the Siemens IL300 linear optocoupler and the methods to assess its static and dynamic performances are presented. It is shown that IL300, due to its built-in linearizing feedback photodiode, makes it possible to build coupling schemes that associate good linearity with the inherent properties of optical devices, as true galvanic isolation, high isolation voltage and transmission down to dc. The integral linearity, 0.029%, obtained on the coupling of typical nuclear spectroscopy pulses makes us believe that traditional capacitive coupling used in nuclear spectroscopy circuits can be replaced by optical coupling in the near future.
ISSN:0018-9499
1558-1578
DOI:10.1109/23.507168