OPA4134UA vs. LM837 as replacement for TL074

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What is your favourite TL074 Replacement (for a Microphone Preamp, Quad amp)

  • LM837

    Votes: 0 0.0%

  • Total voters
    14

moley1390

Member
Joined
Jun 17, 2012
Messages
10
Location
Canberra, Australia
Just a quick question, wondered if anybody would like to weigh in on this?

I know there are countless opamp threads, but I'd really be interested in a direct comparison. Datasheets:
http://www.farnell.com/datasheets/1361012.pdf
http://www.national.com/ds/LM/LM837.pdf

Hopefully someone out there may have had some experience with both.

Note: OPA4134 is the 4 amp version of 1134, 2134

Thanks!
 
While it is difficult to answer such questions without looking at the application, from a distance the 4134 with a FET input is more similar to the TL074 than the LM837 with pnp transistor input.

JR
 
for what it's worth, it's common to replace tl071 with opa134 chips. Results are often said to be more pleasing to ones ear. So I could see replacing a tl074 with opa4134 in terms of it would work but I cannot comment on the sonics as I have never done it. 
 
Just remember that the OPA4134 is not available in a DIP14 format, only surface mount.  You will have to get an adaptor if your existing PCB is DIP.  If it's a new design, no problem.  Also, I believe the OPA4134 uses more current than the TL0 stuff.  If you are replacing a whole bunch of them, make sure your power supply can handle it.

Cheers,
Zach
 
Hey all,

How about the OPA4228 (OPA228 family)
I've just had a listen to a 2228 vs. a 2134, and I find the 2228 to be a little more "accurate" in the highs, while the 2134 is quite warm and fluffy (in a good way!).

Application is microphone preamplifier, have to be compatible with TL074 for a mod - Noticed that the 4228 has less current draw...? Datasheet http://www.farnell.com/datasheets/1361030.pdf

It's also more than twice the price of the 4134 - I assume this is because of the increased slew and GBW?

If money was no object, would this be the way to go?

Also, starting a poll!
 
I voted for other... no opinion on the 4134, but 837s like to explode if you sneeze within twenty feet of them. I'd avoid them if at all possible.
 
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