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Jan Dupont 13th July 2007 05:22 PM

Best low budget OPAmp ?
What is your experience ??

Which low budget single 8 pin DIP OPAmp (let's say a price below 5.00 or $7.00) are best ??

Dr_EM 13th July 2007 06:32 PM

OPA2134 (OPA134 for single) seems good for a lot of purposes. A BJT input op-amp may exhibit lower noise but will only be suitable for some applications.

Jan Dupont 13th July 2007 07:28 PM

The OPA134 seems like a good choice !

maxlorenz 14th July 2007 01:45 AM


Why not this one?

...the single version of the famous LM4562. ;)
(long brake-in, if you believe in such things)

US$3.38 at digikey (but check for free samples at the previous link)


Ryssen 14th July 2007 03:14 AM


But the free sampels had a shipping cost that I could have gotten 10-15 of them at digikey...:mad:

jackinnj 14th July 2007 04:02 AM

For the highest ratio of quality to cost -- NE5532 and NE5534 -- these workhorses can really perform

Nordic 14th July 2007 05:51 AM

of course there is no such thing as a universal opamp, and the main groups, fets and BJTs shine under difirent conditions...

Despite graphs etc... my vote goes to opa2132 (the more expensive cousin of opa2134 but it should stll be about $6)

The ONE reason this chip stands out to me is good noise rejection on the inputs.... stuff like PC soundcards.. this has been my cheap chip rolling experience.

Jan Dupont 14th July 2007 06:44 AM

Thanks all ;)

Even though the latest suggestions wasn't single opamps :D

Nordic 14th July 2007 06:46 AM

well the single version is opa132.... it has the benefit of offset adjustment pins too.

Jan Dupont 14th July 2007 06:49 AM

I was aware of the single version OPA132 ;)

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