[sdiy] ASM1 TL072/TL074 vs TL082

[Ian Fritz]

Paul --

Have a look at the TI/BB OPA4227. This is a quad version of the OPA227,
which in turn is an improved version of the good-old OP27. These are
available from Digikey.

  Ian

----- Original Message -----
From: "Paul Maddox" <Paul.Maddox at wavesynth.com>
To: "Synth DIY LIST" <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, October 10, 2001 4:56 PM
Subject: Re: [sdiy] ASM1 TL072/TL074 vs TL082


> All,
>
>  On this subject,
> anyone know of any low noise, low offset quad opamps, that are pin
> compatible with the TL074?
>
>   Paul
>
>
>
> ----- Original Message -----
> From: Gene Stopp <gene at ixiacom.com>
> To: <xmurz at gmx.de>; <synth-diy at dropmix.xs4all.nl>
> Sent: Wednesday, October 10, 2001 11:11 PM
> Subject: RE: [sdiy] ASM1 TL072/TL074 vs TL082
>
>
> > Quick answer:
> >
> > haven't tried it
> > should work
> > probably won't notice any difference
> >
> > The signal-to-noise ratio is so high, being a 10v p-p system, that the
> > difference in noise will be way down in the mud (assuming that you
> attenuate
> > to line level after the output of the final VCA).
> >
> > I just happened to have a few tubes of TL082's when I designed it. :)
> >
> > Best Regards,
> >
> > - Gene
> >
> >
> > -----Original Message-----
> > From: xmurz at gmx.de [mailto:xmurz at gmx.de]
> > Sent: Wednesday, October 10, 2001 1:21 PM
> > To: synth-diy at dropmix.xs4all.nl
> > Subject: [sdiy] ASM1 TL072/TL074 vs TL082
> >
> >
> > Hello!
> > I'm going to build the ASM1 and am currently preparing the PCB's.
> > I'm willing to replace the TL082 with TL072 and TL074.
> > What are the drawbacks (if any)?
> > Would you recommend sticking to the TL082's?
> > Is the noise ratio better when using the TL072/TL074 's?
> > Is it important for cerain modules only?
> > In how far is the sound affected?
> > Regards,
> >          Hans
> >
> >
>