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TL054: Power up sequence

Kazuhiko Hirano
Genius 11573 points
Part Number: TL054
Other Parts Discussed in Thread: TL052

Hello,

VCC+ and VCC- can be powered up in any order?

Or they must power up the same time?

Best regards,

K.Hirano

  • 0
    TI__Expert 6625 points

    Hi Kazuhiko, 

    It is highly recommenced that both VCC+ and VCC- are powered up at the same time or very close to each other. The reason is because the op amp internal circuits are not designed to have one supply turned on before the other. Also make sure during this power up no signal is applied at the input pins. 

    Regards,

    Bala Ravi

  • 0
    Guru 140200 points

    Hi Kazuhiko,

    we use many thousands of the TL052 in our products and never had any problems with unequal power-ups and power-downs. Having said this, as already mentioned by Bala, it's really important that you never violate the absolute maximum ratings, not even briefly! Also, the power supply must be latch-up protected. I have discussed this issue in the following posts:

    Kai