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TI Home » TI E2E Community » Support Forums » Amplifiers » Precision Amplifiers » Precision Amplifiers Forum » How I use the Enable/Disable pin of OPA454?
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How I use the Enable/Disable pin of OPA454?

How I use the Enable/Disable pin of OPA454?

This question is not answered
Ruizhi.Xu
Posted by Ruizhi.Xu
on Nov 06 2009 03:21 AM
Prodigy40 points

In my design, I would not use the enable/disable function.

How I connect the Enable/Disable and E/D com pin.

Now, I connect Enable/Disable directly to 5V and E/D to GND. Is that right?

Thank you!

OPA454
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  • Matt Hann
    Posted by Matt Hann
    on Nov 06 2009 11:48 AM
    Expert7120 points

    There is a good explanation of how the E/D pin and E/D common pins function on page 20 of the OPA454 data sheet if you have not looked at this already.  Also, if you look at the specification table you will see than when the E/D pin is active when it is a minimum of 2.5V above E/D common.  So if you connect E/D common to ground and E/D to 5V this will keep the OPA454 permanently active.

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  • Ruizhi.Xu
    Posted by Ruizhi.Xu
    on Nov 06 2009 21:04 PM
    Prodigy40 points

    Thanks, I got it.

    "permanently active", this is what I want.

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