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After the PCN change involving the chip, the latest newly produced materials of the old project cannot be used normally

Tonyx.wu
Genius 3965 points
Part Number: TL3472

Tool/software:

After the PCN change involving the chip, the latest newly produced materials of the old project cannot be used normally

TL3472IDR.pdf

This specification sheet was just downloaded by me from the official website - it should be the specification sheet corresponding to the PCN change.  The customer wants to know if it involves the specification sheet of the previous version before the most recent PCN change.  If so, please provide it.

The customer wants to compare the two specification sheets to see exactly what was changed in the most recent PCN change, in order to understand why the materials before the PCN change can be used, but the newly produced materials cannot be used normally

  • 0
    TI__Guru* 77191 points

    Hi Tonyx,

    Tonyx.wu said:
    The customer wants to know if it involves the specification sheet of the previous version before the most recent PCN change.

    Due to FAB change in the product, there may be some differences between pre-PCN and post-PCN product. Could you send me the schematic and I will review it?

    With the op amp via new FAB, there may be a difference in BW, open loop output impedance and other variations. Sometimes, the circuit needs to be modified and compensated slightly. Without the actual circuit, I am unable to see the potential issues in your application. 

    If you do not want to reveal the schematic in public forum, please post a "friendship" request via E2E and we can discuss the issues via E2E private messaging system or via TI's internal email. Please let me know. 

    Best,

    Raymond