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OPA549: ENABLE/STATUS (E/S) Pin issue

Part Number: OPA549

Hi Team,

My customer has some questions. Could you kindly answer the below quesitons?

① What's the meaning of disable/enable time in the datasheet?

After Enable get high, It takes 1us for OPA549 to output the signal?

② Is there any specific reqirements for rise/fall time?

They observed soft start operation when the enable pin gets slowly high.

Regards,

Shoo

  • Hi Shoo,

    ① What's the meaning of disable/enable time in the datasheet?

    The S/E pin timing refers how fast the digital pin is capable to Enable or Disable the OPA549's output port. 

    ② Is there any specific reqirements for rise/fall time?

    This specification depends on the load, gains, operating temperature and the output voltage step transitions etc.. The datasheet is specified that the slew rate is at 9V/usec with 50Vpp at Gain =1 V/V. 

    If you have other questions, please let us know.

    Best,

    Raymond