[time-nuts] AD5791 for EFC control ?

[paul swed]

Looked up the DAC1220 and thats a very nice chip for ~$8.
Amazing 20 bit resolution and easy to hook up.
Regards
Paul
WB8TSL


On Sat, Apr 20, 2013 at 6:00 AM, <EWKehren at aol.com> wrote:

> the DAC1220 is definitely worth a second look. Two wire opto coupling makes
>  it even better. On my next PCB run there will be a test circuit. Thank you
> for  the hint.
> Bert Kehren
>
>
> In a message dated 4/19/2013 9:44:32 A.M. Eastern Daylight Time,
> herbert at 13thfloor.at writes:
>
> On Fri,  Apr 19, 2013 at 09:20:05AM -0400, EWKehren at aol.com wrote:
> > As one of  our digital loop projects we took a very, very close
> > look at it, but  thought once you consider the application,
> >  requirements of external references, its influence on
> > temperature performance and cost, a dithered 20 bit LTC  1655
> > held at 0.1 C is as good a solution.
>
> Texas  Instruments has a number of precision DACs for a
> very reasonable price, for  example the DAC1220 (20bit
> low power delta-sigma, ~8 USD) and precision  voltage
> references to go with (e.g. REF5050, ~2  USD).
>
> best,
> Herbert
>
> > Have not actually tested a 5791 but  I know some one that has
> > an evaluation board.
>
> > I will ask him to contact you off list
>
> >  Bert Kehren
>
>
> > In a message dated 4/19/2013 7:22:16 A.M. Eastern  Daylight Time,
> > phk at phk.freebsd.dk writes:
>
>
> >  Has  anybody tried using the AD5791 20bit DAC for EFC control  ?
>
> > --
> > Poul-Henning Kamp       |  UNIX since Zilog Zeus  3.20
> > phk at FreeBSD.ORG       | TCP/IP since RFC  956
> > FreeBSD committer   | BSD since  4.3-tahoe
> > Never attribute to  malice what can adequately be explained by
> incompetence.
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