LMC6574: Alternative device

Mark Broxson

Part Number: LMC6574
Other Parts Discussed in Thread: LMC6024, TLV9004, OPA4348, OPA4313, TLV2454

The above part is obsolete and the recommended replacement is the LMC6024. However I am using it in a 3.3V filter circuit but the LMC6024 has a minimum supply voltage of 4.75V which I cannot accommodate in my current design. Is there another pin compatible lower voltage quad op-amp with a spec equivalent to the LMC6574? Thanks

over 7 years ago

0 kai klaas69 over 7 years ago

Guru 140200 points

Hi Mark,

there are several alternatives which could be used:

www.ti.com/.../products.html

Not knowing your circuit I cannot say which one fits best, though.

Kai

0 Paul Goedeke over 7 years ago in reply to kai klaas69

TI__Mastermind 30600 points

Hi Mark,

Take a look at the TLV9004 - it's a modern, low cost op-amp that is as good or better than the device you are currently using. I think it will work well in your system.

Please provide more applications information if you feel that my recommendation won't work.

Thanks,
Paul

0 Mark Broxson over 7 years ago in reply to Paul Goedeke

Prodigy 50 points

I'll check that out but the things that are important are operating at 3.3V, as low power as the LMC and GBW as good if not better. Thx

0 Mark Broxson over 7 years ago in reply to Paul Goedeke

Prodigy 50 points

Paul,
On paper that parts looks ideal but I can't find any stock of it with any UK distributors.

0 kai klaas69 over 7 years ago in reply to Mark Broxson

Guru 140200 points

Hi Mark,

why not taking the OPA4348?

Kai

0 Paul Goedeke over 7 years ago in reply to kai klaas69

TI__Mastermind 30600 points

Hi Mark,

A couple more suggestions in case you're unable to find the TLV9004 in stock:

OPA4313
TLV2454

-Paul

0 Paul Goedeke over 7 years ago in reply to Paul Goedeke

TI__Mastermind 30600 points

One more quick note - I had forgotten that the TLV9004 isn't fully released, but will be by the end of September. You can order samples today from TI.com, which could hold you over until your production run. If you are able to wait for supply, I would still recommend that part. Otherwise, the parts I mentioned above are good alternatives if you need an alternative now.

-Paul

0 Mark Broxson over 7 years ago in reply to kai klaas69

Prodigy 50 points

That looks a good bet and I can find stocks of it and so I'll give that a go. Thanks.

0 Mark Broxson over 7 years ago in reply to Paul Goedeke

Prodigy 50 points

Paul,

Thanks for those and the OPA4313 looks to be the better of the 2 and I can see stocks of them and so I'll give that a go. Thanks.

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LMC6574: Alternative device