OPA4228 runs hot - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st July 2007, 03:12 AM   #1
iron25 is offline iron25  United States
diyAudio Member
 
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!!!!!
  Reply With Quote
Old 1st July 2007, 10:09 AM   #2
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
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.
  Reply With Quote
Old 1st July 2007, 05:42 PM   #3
iron25 is offline iron25  United States
diyAudio Member
 
Join Date: Jun 2007
I didn't consider the draw, everything else seems to be fine.
Thanks for pointing that out!!!
Sometimes the obvious isn't so!!!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for amp kit that runs on 12V (car battery) maurycy Chip Amps 5 2nd October 2008 08:29 PM
Dynaco ST-120 runs hot bobgroger Solid State 6 15th April 2008 05:20 AM
PC speakers amp runs ac?? Does DC work? NeMeSiS_singh Power Supplies 8 14th June 2006 10:35 AM
OPA4228 help needed afxdave Chip Amps 2 8th April 2004 04:25 PM
BOSOZ's PSU runs very very hot ruangrit Pass Labs 18 5th February 2003 11:45 PM


New To Site? Need Help?

All times are GMT. The time now is 09:01 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2