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

[harrybissell]

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 !!!  :^)

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