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hi all, phil can MAX 197 be made more reliable by using external clock (a xtal). what can be good alternative to MAX 197 for VoIP application bye, anand.
Phil <> wrote:
I have uploaded my ADC driver to the files section of the group.
As this is the first time I have contributed to the group I would
appreciate if you could give me any feedback, good or bad, if you
try it.
Also, if you have any questions at all, please let me know.
Cheers
Phil
--- In "Phil" <> wrote:
>
>
> Using one of the spare EP930x timers, I am actually getting quite
> reliable and accurate timing for sampling signals at a rat!
e of
> ~5.3kS/s. Also, although I haven't had a chance to test, I am
hoping
> that I will be able to do this across multiple channels (up to 6
> channels, giving ~32kS/s total).
>
> Which reminds me, I was going to see if anyone was interested in
the
> drivers that I have written for ADC sampling? Probably not
terribly
> robust yet, since I only have the one board to play with at the
> moment, but could be useful nonetheless. Let me know if you are
and
> I will post them.
>
> Cheers
> Phil
>
>
> --- In Jim Jackson <jj@> wrote:
> >
> >
> > On Wed, 8 Feb 2006, Phil wrote:
> > > --- In "ajbanand" <ajbanand@> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > i have TS-7250 with MAX197 ADC.
> > > >!
i am
trying to provide voice support to my board using the
ADC.
> > > > i have configured my ADC for single channel usage..
> > > > its not giving proper digital values for the analog input, i
am
> > > getting
> > > > value like 0,5,17 etc all less than 100. for bipolar -5 tp
+5
> range
> > > > these values all seem to be noise..
> > > > can anyone please explain what could be wrong in my
approach...
> > >
> > > If you reply with the code that you are using, you will get a
> better
> > > response from the members of this group. Without it, we can't
> really
> > > help.
> > >
> >
> > Also it would be of use to know the circuit schematic for the
> electronics
> > feeding the input.
> >
> > However having said that, I can't see how you can reliably!
use
the
> MAX197
> > for sampling voice or anyother signal > half the the Kernel HZ
> value.
> > Timing for the sampes will not be accurate enough, even though
> sampling
> > one input only, one can get sampling rates of upto 50K
samples/sec
> (If my
> > memory if correct).
> >
> > Jim
> >
>
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