# Why is my opamp slow?

**URL:** <https://lookmumnocomputer.discourse.group/t/why-is-my-opamp-slow/3517>\
**Category:** DIY STUFF\
**Created:** [May 17, 2021, 9:37pm UTC](https://lookmumnocomputer.discourse.group/t/why-is-my-opamp-slow/3517 "2021-05-17T21:37:10Z")\
**Posts on this page:** 3\
**Page:** 3

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**Author:** ![Phazer](https://avatars.discourse-cdn.com/v4/letter/p/4bbf92/32.png) [@Phazer](https://lookmumnocomputer.discourse.group/u/Phazer)\
**Post date:** [June 17, 2024, 2:00am UTC](https://lookmumnocomputer.discourse.group/t/why-is-my-opamp-slow/3517/41 "2024-06-17T02:00:42Z")

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I see, thanks for the suggestion on the MCP6024.  
I’m still unsure why the TL072 doesn’t have any issues with the same input signal though.

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**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [June 17, 2024, 2:11am UTC](https://lookmumnocomputer.discourse.group/t/why-is-my-opamp-slow/3517/42 "2024-06-17T02:11:32Z")

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Pretty much just lucky, I think. The datasheet doesn’t guarantee what will happen at voltages close to the rails, so it’s entirely reasonable one device behaves better than the other outside the spec range.

_Added:_ Oh wait, sorry, you can’t use an MCP6024. It can only take up to 5.5 V power. Maybe there’s some other rail to rail op amp that can go up to 12 V.

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**Author:** ![Phazer](https://avatars.discourse-cdn.com/v4/letter/p/4bbf92/32.png) [@Phazer](https://lookmumnocomputer.discourse.group/u/Phazer)\
**Post date:** [June 17, 2024, 2:23am UTC](https://lookmumnocomputer.discourse.group/t/why-is-my-opamp-slow/3517/43 "2024-06-17T02:23:01Z")

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That makes sense. Thanks again for helping clear things up.

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