Re: [ts-7000] Re: MAX197 ADC interfacing

[anand bhavnani <>]

 phil,

 

thank you for ur response.

i would like to have the driver which u have mentioned in the mail.

i am looking at a sampling rate of 8000, so if possible please also mention how would i achieve it.

 

yours,

anand.

Phil <> wrote:

> Using one of the spare EP930x timers, I am actually getting quite 
> reliable and accurate timing for sampling signals at a rate 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 o!
>  nly 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 <> 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 y!
>  ou 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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