Best low budget OPAmp ?

Jan Dupont · 13th July 2007, 04:22 PM

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, 05:32 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, 06:28 PM

Hmmm....
The OPA134 seems like a good choice !

maxlorenz · 14th July 2007, 12:45 AM

Hi ACD,

Why not this one?
http://www.national.com/pf/LM/LME49710.html

...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)

http://www.digikey.com/scripts/dksea...=LME49710NA-ND

Cheers,
M

Ryssen · 14th July 2007, 02:14 AM

Quote:

Why not this one?http://www.national.com/pf/LM/LME49710.html

Go,go,go....

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

jackinnj · 14th July 2007, 03:02 AM

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

Nordic · 14th July 2007, 04:51 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, 05:44 AM

Thanks all

Even though the latest suggestions wasn't single opamps

Nordic · 14th July 2007, 05:46 AM

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

Jan Dupont · 14th July 2007, 05:49 AM

I was aware of the single version OPA132

13th July 2007, 04:22 PM	#1
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	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 ?? __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

13th July 2007, 06:28 PM	#3
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Hmmm.... The OPA134 seems like a good choice ! __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

14th July 2007, 12:45 AM	#4
maxlorenz diyAudio Member Join Date: Oct 2003 Location: osorno , Chile	Hi ACD, Why not this one? http://www.national.com/pf/LM/LME49710.html ...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) http://www.digikey.com/scripts/dksea...=LME49710NA-ND Cheers, M __________________ Cheapest horn speakers: https://picasaweb.google.com/lh/phot...eat=directlink

14th July 2007, 05:44 AM	#8
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Thanks all Even though the latest suggestions wasn't single opamps __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

14th July 2007, 05:49 AM	#10
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	I was aware of the single version OPA132 __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com


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13th July 2007, 05:32 PM	#2
Dr.EM diyAudio Member Join Date: Oct 2006 Location: Swindon	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.

14th July 2007, 03:02 AM	#6
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	For the highest ratio of quality to cost -- NE5532 and NE5534 -- these workhorses can really perform

14th July 2007, 04:51 AM	#7
Nordic diyAudio Member Join Date: Sep 2005	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.

14th July 2007, 05:46 AM	#9
Nordic diyAudio Member Join Date: Sep 2005	well the single version is opa132.... it has the benefit of offset adjustment pins too.

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