low thermal drift optoisolator

A

abhichaotic

New Member

• Aug 5, 2010

• #1

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

Well-Known Member

Most Helpful Member

• Aug 5, 2010

• #2

What type of stability are you concerned about?

What is the application?

 

A

abhichaotic

New Member

• Aug 5, 2010

• #3

crutschow said:

What type of stability are you concerned about?

What is the application?

Click to expand...

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

 

K

KMoffett

Well-Known Member

• Aug 6, 2010

• #4

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