[time-nuts] AD5791 for EFC control ?

[EWKehren at aol.com]

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  ?

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