• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 157 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

OPT3101: Please review the schematic

Chase Jeong
Mastermind 7495 points
Part Number: OPT3101

Dear TI experts,

My customer have a product which is in mass production, and they use OPT3101 for this product.

Recently they have a failure of OPT3101, INP(25) pin have no output voltage so they cannot control photodiode.

Could you review the schematic and tell me what is wrong?

Currently failure rate is 2, total amount is 20000.

SCHEMATIC1 - 1.OPT3101.pdf

Best regards,

Chase

  • 0
    TI__Genius 9380 points

    Chase,

    I don't see a problem with the schematic. If INP doesn't have a voltage out then yes the Photodiode will not work. I suggest replacing the parallel capacitor C9 and see if that fixes the problem. If C9 is cracked or has been damaged it will be a short to ground. 

    Let me know how this works.