[sdiy] Opamp compatibility questions

[groovyshaman]

<snip>

> >>4) Any pin compat. subs for LM324 ?
> >
> >TL075? (I really don't recall)
>
>          The TL074, TL084, TL054...etc all have the same pinouts as the
> LM324....however...doing a straight sub can be tricky...generally, when I
> use the LM324 in a circuit, I am taking advantage of some of it's
> characteristics, such as an output that can go very close to the pin 11
> voltage, and an input whose common mode input range can go a bit below the
> negative rail....but in general, you can interchange these devices...

If you want to go up "upper east side" on the LM324 and maintain the
features Jim pointed out, you could try a LT1014.  This is a great DC part.

-George