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  • TI Thinks Resolved

TL103WA: Op-Amp Field Failure

Prodigy 50 points
Bret H

Part Number: TL103WA

This part is being used on a siren/microphone product. When microphone is keyed, the PA does not enable. The signal makes it to the Microcontroller but voltages across Op-Amps are zero.

Customer power source is 12 to 14 Volts (vehicle battery).  

Prodigy 50 points
Bret H
  • Guru 90480 points
    Ron Michallick

    In reply to Bret H:

    Bret,

    We have the report however, expect a few days delay due to the weekend and Christmas holiday.

    Regards,
    Ronald Michallick
    Linear Applications

    TI assumes no liability for applications assistance or customer product design. Customer is fully responsible for all design decisions and engineering with regard to its products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning Customer's design. If Customer desires engineering services, the Customer should rely on its retained employees and consultants and/or procure engineering services from a licensed professional engineer (LPE).

     

  • Guru 90480 points
    Ron Michallick

    In reply to Ron Michallick:

    Bret,

    The report has useful information however it doesn't have enough information to pinpoint a failing pin. At this point, all we need is DC measurements for keyed, not keyed on all pins. If you have more than one suspect device, check the DC voltages on them too to see if the result varies or is always the same. I believe you said, the failure is not always the same.

    Regards,
    Ronald Michallick
    Linear Applications

    TI assumes no liability for applications assistance or customer product design. Customer is fully responsible for all design decisions and engineering with regard to its products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning Customer's design. If Customer desires engineering services, the Customer should rely on its retained employees and consultants and/or procure engineering services from a licensed professional engineer (LPE).

     

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