[sdiy] Replacement for 741 op amps??

[harry]

Hello Jonathan

The 1458 is a dual 741 with essentially the same specs. Maybe
you were thinking of the 4558... which is everything you suggested.

I was gonna rip some 4558's out of a preamp circuit at one time...
mistaking them for the 1458. When I finally got the data sheets out...
I put them right back into the circuit, where they remain to this day.
(20 years later...)

H^) harry

Jonathan Lippard wrote:

> At 03:16 PM 9/14/01 -0700, you wrote:
> >  Hello, this is a question I forgot the answer to;
> >What is the best low noise replacement for 741's ?  is
> >their a drop in replacement?       thanks.
>
> I agree that the TL0xx series are worthy candidates for replacement.  The
> only caveat I can think of, aside from considering input voltage
> limitations and the presence of phase reversal when those limits are
> exceeded, is that the 741 of course is a BJT-input stage opamp, whereas the
> TL0xx opamps have FET input stages.  I'm not sure in which cases this would
> be a bad thing, of course, but I thought I'd point it out for benefit of
> the archives and let people correct me for personal benefit. ;)
>
> Other good part to look at would be the LM1458, which is BJT-input like the
> 741, but with lower noise, input voltage offset, and higher slew
> rate.  Problem is this is a dual opamp: is there a single equivalent that's
> pin-compatible with the 741?  I've never looked.
>
> -Jonathan