[volt-nuts] ADA4522

[acbern at gmx.de]

Low frequency noise is very good, but is is high noise at about 800kHz (chopper) and above (possible artifacts). That should be filtered, depending on your application. 
What did you foresee to get rid of it, or would you accept it? Simple RC filter as indicated in the manual increases the output resistance.




> Gesendet: Freitag, 08. April 2016 um 03:35 Uhr
> Von: "Randy Evans" <randyevans2688 at gmail.com>
> An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
> Betreff: Re: [volt-nuts] ADA4522
>
> Sure, all good applications.  I am thinking of using it as an output filter
> for a 10V reference to filter all noise above 10Hz,
> 
> On Thu, Apr 7, 2016 at 6:27 PM, Daniel Mendes <dmendesf at gmail.com> wrote:
> 
> > Ada4522-2 and 4522-4 are stocked at mouser. What about summing all outputs
> > to reduce noise? Or use as buffered outputs with good reverse isolation...
> >
> > Daniel
> > Em 07/04/2016 13:31, "Randy Evans" <randyevans2688 at gmail.com> escreveu:
> >
> > > Has anyone looked at the ADA4522 precision op amp from Analog Devices.
> > It
> > > looks very intriguing with it's extremely low offset voltage drift of 22
> > > nV/°C maximum.  The offset voltage is as high as 5 uV but this could be
> > > nulled out and it should be very stable over temperature after that.  It
> > > could be a great choice for a voltage reference circuit.  Looks quite
> > > inexpensive also, although AD only sell in tubes of 96 right now.
> > > _______________________________________________
> > > volt-nuts mailing list -- volt-nuts at febo.com
> > > To unsubscribe, go to
> > > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> > > and follow the instructions there.
> > >
> > _______________________________________________
> > volt-nuts mailing list -- volt-nuts at febo.com
> > To unsubscribe, go to
> > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> > and follow the instructions there.
> >
> _______________________________________________
> volt-nuts mailing list -- volt-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.
>