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Old 1st July 2007, 03:12 AM   #1
iron25 is offline iron25  United States
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Join Date: Jun 2007
Default OPA4228 runs hot

Hello folks,

I hope to find help here as the engineers at TI have no answers!!!
They say there was a thermal issue but was never followed up on!!!

I replaced TL074's with the 0PA4228 and while the sound is greatly improved the op amps seem to run quite a bit hotter in temp. I am also having the same problem with the dual version.

Has anyone had any similar experience? Solutions?

Thanks for your help!!!!!
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Old 1st July 2007, 10:09 AM   #2
djk is offline djk
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Location: USA
If you read the spec sheet you will find they draw twice as much power, so they should run hotter.

Spec for the quad version says about 0.45W at 15V, a bunch for this small package.
Candidates for the Darwin Award should not read this author.
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Old 1st July 2007, 05:42 PM   #3
iron25 is offline iron25  United States
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I didn't consider the draw, everything else seems to be fine.
Thanks for pointing that out!!!
Sometimes the obvious isn't so!!!
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