Which IC's In This List Are Better?

Started by Steve Mavronis, January 30, 2010, 09:10:04 PM

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Steve Mavronis

My dad gave me some op amps today and some are different brands, etc. Do any of them off a better advantage over another (if any) for use in DIY pedals?

IC Chips:

    LM1458N (National Semiconductor M82AY)
    LM1458N (National Semiconductor JR28AB)
    UA741CN (SGS-Thomson Microeclectronics MAL 90D918)
    LM741CN (Motorolla IQ8720)
IC Cans:

    MC1458CG (Motorolla L8235)
    CA741T (RCA H 919)
    LM741EH (National Semiconductor H8930)
    C UA 741HMQB F8804 Korea
Guitar > Neo-Classic 741 Overdrive > Boss NS2 Noise Suppressor > DOD BiFET Boost 410 > VHT Special 6 Ultra Combo Amp Input > Amp Send > MXR Carbon Copy Analog Delay > Boss RC3 Loop Station > Amp Return

Paul Marossy

I won't say that any one is better than the other because they are all general purpose opamps which happen to be pretty noisy for use in audio applications.

petemoore

#2
IC Chips:

LM1458N (National Semiconductor M82AY)
LM1458N (National Semiconductor JR28AB)
UA741CN (SGS-Thomson Microeclectronics MAL 90D918)
LM741CN (Motorolla IQ8720)

IC Cans:

MC1458CG (Motorolla L8235)
CA741T (RCA H 919)
LM741EH (National Semiconductor H8930)
C UA 741HMQB F8804 Korea
 These are the best you got ?
 Just kidding, these are probably the best you've got though.
 IC Chips:

LM1458N (National Semiconductor M82AY)

 A real humdinger, see data sheet, find out if it's single or dual first, then if it's like one thing or the other such as:
 Low Current, Low Noise, General Purpose, all these are fine qualities, and the 1458 is a fine competitor, depends on what you want an opamp to do on...
LM1458N (National Semiconductor JR28AB)
 Doubtful you notice any difference between this and a 1458.
UA741CN (SGS-Thomson Microeclectronics MAL 90D918)
 Dist+, Micro-Amp. This amp is so dirty you can tell, in the Dist+ at least, known for bad noise characteristics and less than linear behaviour, what came in the DIST+, linear isn't necessarily good for this circuit, tastes vary. Worth trying a cleaner opamp in the Micro-Amp.
LM741CN (Motorolla IQ8720)
 As you may tell, I'm not very brand specific, I tried that and don't remember feeling anything.  
IC Cans:
 Cans are cool.
MC1458CG (Motorolla L8235)
 Someone else could tell you more about the pre and sub-fixes on the basic numbers "1458" and other opamps, like the TL series, TL082 is the general purpose [so is TL072 IIRC, been a while since I studied the little differences], the TL062 is low current.
CA741T (RCA H 919)
LM741EH (National Semiconductor H8930)
C UA 741HMQB F8804 Korea
 More 741's, basically you can find various OA's and try 'em all out in the 741's in the DIST+.
 Other times you might want something that can handle more current swiftly, or do the 'rail to rail' cleanly or do work without drawing large currents.
  For clean tryouts the Micro-Amp's good. I never noticed the big noise I hear about, and like the performance just fine from even the ''lowliest'' high performance amplifiers, 741's used to be a more common chosen alternative back in the day, I still use one.
Convention creates following, following creates convention.