Due to a mistake during design a typical 2 channel amplifier doesn’t work for my PCB. The pins for one of the channels are mixed. Are there any precision amplifiers that follow this design?
Hello Alex,
Thank you for your post.
It would be really helpful if you could provide more information in regard to the ratings you need for the amplifier and not just the pin assignment.
Hi alex5,
I’m not aware of any opamps which have the pinout you show, though there may be one somewhere. Unfortunately, I don’t know of any way to search for such a device other than opening many, many datasheets. Even if you find one, there’s no guarantee it will meet your electrical requirements.
I would recommend either changing your PCB design, or possibly design or use a separate adapter board so one can use a standard pinout part with your particular layout. Of course, even if you could use an adapter board, this could potentially cause some signal integrity issues in some applications.
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The industry’s settled on the traditional op amp pinout in the interest of footprint compatibility. With the exception of a few high-speed devices such as the AD8045 that depart from the pattern for signal integrity reasons, there’s little incentive for manufacturers to build a device that’s different from all the others out there.
As David suggests, one could try using an adapter board to cobble things together long enough to find the other oopsies present. One re-spin per design is a better plan than one re-spin per mistake…
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Hello @alex5,
We have all been there.
I see bodge wires in your future along with another board revision.
I feel your pain.
Sincerely,
Aaron
P.S. 30 AWG (wirewrap) wire is my go-to.
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