[sdiy] Strange but very useful OPamp design! :-)

[Tim Parkhurst]

What about crosstalk problems? I would think that would be tougher (although
not impossible) to manage with eight op amps in the same package size (as a
four op amp package). Also, increased current draw.


Tim (twice as much in a smaller package) Servo

"Imagination is more important than knowledge." - Albert Einstein




> -----Original Message-----
> From: karl dalen [mailto:dalenkarl at yahoo.se]
> Sent: Friday, April 29, 2005 5:17 PM
> To: harrybissell
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Strange but very useful OPamp design! :-)
> 
> 
> --- harrybissell <harrybissell at prodigy.net> skrev::
> > Hi Karl:
> >
> > TI made an octal version of the TL07x series... don't know if it
> > is still available. It had two inputs to each opamp so I guess your
> > patent application is safe...
> >
> > ... when do you start shipping ???  (I wanna buy some !!!  :^)
> 
> As soon as i found about 2-3 million USD to do the masks and put
> up the volume fabrication! In other words i will never be able to
> do it, but perhaps one of the elephants could pick up the idea
> since its public domain now! :-)
> 
> I think the idea is neat!
> 
> Reg
> KD
> 
> >
> > H^) harry
> >
> > karl dalen wrote:
> >
> > > I wonder , why isnt there any hexa and,octa opamps?
> > > I think it would be interesting, you could sell for instance
> > > a octal with inverting only or non inverting only inputs,
> > > or half inverted and the other half non inverted!
> > >
> > > The idea would be that there would be two variants to buy
> > > one where the inverted and noninverted would be summing
> > > floating inputs with the regular feedback resistor to set gain
> > > and a version with very high impedance on inverted and
> > > noninverted devices both variants used as buffer stages
> > > with gain of 1.
> > >
> > > The manufacturer could mix devices in a package, for instance
> > > in a SO16 you could fit 4 floating inverted inputs, 2 non
> > > inverted buffers and 2 floating non inverted inputs.
> > >
> > > Applications?
> > >
> > > Well many, as many as there are today for regular OPamps.
> > > Others where they would ecxell ordinary OPamps, for instance
> > > buffer stages in CV muxes, headphone and line driver buffers,
> > > non resistor dependant signal inverters, integrators etc, etc.
> > >
> > > Reg
> > > KD
> >
> >
> 
> --
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.308 / Virus Database: 266.11.0 - Release Date: 4/29/2005
> 

-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.11.0 - Release Date: 4/29/2005
 



***************************************************************************
This message is confidential.  The information contained in
this e-mail message is intended only for confidential use of the
recipient(s) named above. If the reader of this message is not the intended
recipient or an agent responsible for delivering it to the intended
recipient, you are hereby notified that you have received this document in
error and that any review, dissemination, distribution, or copying of this
message is strictly prohibited.  If you have received this communication in
error, please notify us immediately by e-mail, and delete the original
message.
***************************************************************************