low thermal drift optoisolator

[abhichaotic]

hi,
any one suggest an optoisolator which has least thermal drift . also tell me what parameters are to be looked in a datasheet for determining the thermal stability of optocouplers. presently i have mct2e and cny117. which one is better?

 

[crutschow]

What type of stability are you concerned about?

What is the application?

 

[abhichaotic]

What type of stability are you concerned about?

What is the application?

sir,
the opto coupler should not lose its linearity too much with temperature rise.

 

[KMoffett]

Optocouplers are not linear to start with. What you need to do is use matched pairs with feedback to compensate for non-linearity and temperature.
Google: linear optocouplers
**broken link removed**

Ken