Optocoupler

[shermaine]

Hello,

Need some help urgently.
I need an optocoupler of ic such that it can perform an isolation of current between driver and the DSP card. The DSP Card has a max limit of 2mA.
Pls advise an optocoupler that prevent an overflow of 2mA back to the DSP card.
Thanks.....


shermaine

 

[Russlk]

The current limit at the output of the opto coupler is determined by the resistor placed in series. Why do you need an opto coupler?

 

[shermaine]

Hello,

I still dun get it.
But can i still make use of the opto-coupler?
Pls advise.
Thanks.

 

[Russlk]

I think you do not understand the requirements of the DSP card. You can use the opto coupler, but it will not help in this regard. If you post the specifications of the DSP card, I may be able to help.