[sdiy] Forget the OTA, find me a CDTA!

[Ove Ridé]

Will this circuit be any good for anything but high frequency stuff?
Is there any information of how the circuit is constructed inside?

Re: Fontana bridge. Why would you need that? It seems like the purpose
of the Fontana bridge over the usual opamp/transistor and resistor way
of generating currents, is to deal with impedance issues in the load
or the wires leading up to the load. I don't see how this would be
necessary for audio frequencies, on a short stretch of PCB trace,
going into a rather well behaved piece of silicon.

On 4 May 2013 11:34, cheater00 . <cheater00 at gmail.com> wrote:
> Hey guys,
> just stumbled upon this little novelty item. Apparently the
> not-available-anymore OTA has been obsoleted by the not-available-yet
> CDTA:
>
> http://en.wikipedia.org/wiki/Current_differencing_transconductance_amplifier
>
> http://www.edn.com/design/analog/4405810/The-Current-Differencing-Transconductance-Amplifier--CDTA-
>
> It seems like it's making a case for itself, so who knows.. it might
> find use in future applications and start mass production.
>
> In other news, I've come across this simple-looking voltage-to-current
> converter based off two op-amps:
> http://en.wikipedia.org/wiki/Fontana_bridge
> it's supposed to be a new development.
>
> That's it for this episode of the Jetsons!
>
> Cheers,
> D.
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy



-- 
/Ove

Blog: <http://blog.gg8.se/>

"Here is Evergreen City. Evergreen is the color of green forever."