This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

Best method to add DC bias to output of a digital isolator

Prodigy 190 points

Replies: 2

Views: 3693

Hello,

 

I am using ISO721M isolators to isolate 3 signals.  I wish to add about 0.7 volts DC to the output of the isolators.  The couple of circuits I have tried have caused to much jitter/distortion to the waveforms.

 

The signals I am using vary in frequency from about 40KHz up to about 25MHz.

 

Any suggestions on how best to add some DC bias without effecting the signals?

 

Best Regards,

 

Scott

  • Hello Scott,

    The TI's part number OPA2300 is a high-speed operational amp that you can use for a simple dc offset adjustment circuit.

    You can find the datasheet on the following link.

    http://www.ti.com/lit/ds/symlink/opa2300.pdf

    Regards.

  • In reply to Elias Villegas M.:

    Thnaks for that Elias.

     

    I was also thinking why do I not just use +0.7Vdc for gnd? If I use +0.7Vdc for the output gnd side that should do the trick?

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.