Q: Parallel TL062 opamps?

Started by bool, June 09, 2014, 11:08:45 AM

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bool

I need an educated opinion from those who actually did what I'll ask:

1) I need a buffer-configured (unity gain follower) pair (ie. 2 opamps) in a TL062 package.

2) I need it to have the absolute minimum added components. So ideally the following.

3) Is it long-term reliable to do it "the wrong way", ie. to connect both opamp outputs together WITHOUT the buildout resistors? The 062 do have buildout resistors built-in (68ohm iirc), but they will be effectively outside of the nfb so there may be problems.

4) Did anybody do it like I described - and if so, were there any stability problems experienced and how is the longevity and how does it behave when heated up (like after driving a load for awhile). Any problems with complex loads (fe inductive)?



for illustration, the "wrong way" is on the left ... just reconfigure to unity gain, so w/o any resistors or other components, just tied together.