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PICList Thread
'[EE]: Circuits for Digitiser'
2001\10\25@220954 by David Huisman

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I am looking for circuit ideas for a ADC interface for a PC. My requirements
are

Resolution: 8 bits is fine
Vin: 0 - 5V
Sample Period: 2us (500ks/sec)
Sample time: 1600 samples

I have looked at digital scopes but this os overkill for my application.
The typical Dick Smith style kits are not quite fast enough.

Either a circuit using Flash ADC with Static RAM and pic controller to PC
serial port
or a circuit to plug the parallel ADC data directly into the PC bus
or a low cost (less than $800 AUS) off the shelf unit or second hand storage
scope would do.

Thanks for any help in this matter.

Best Regards

David Huisman

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2001\10\25@222525 by David Duffy

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At 11:50 AM 26/10/2001 +1000, you wrote:
>I am looking for circuit ideas for a ADC interface for a PC. My requirements
>are
>
>Resolution: 8 bits is fine
>Vin: 0 - 5V
>Sample Period: 2us (500ks/sec)
>Sample time: 1600 samples
>
>I have looked at digital scopes but this os overkill for my application.
>The typical Dick Smith style kits are not quite fast enough.

Have a look at http://www.bitscope.com
Regards...

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2001\10\26@045711 by Vasile Surducan

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On Fri, 26 Oct 2001, David Duffy wrote:

> At 11:50 AM 26/10/2001 +1000, you wrote:
> >I am looking for circuit ideas for a ADC interface for a PC. My requirements
> >are
> >
> >Resolution: 8 bits is fine
> >Vin: 0 - 5V
> >Sample Period: 2us (500ks/sec)
> >Sample time: 1600 samples
> >
> >I have looked at digital scopes but this os overkill for my application.
> >The typical Dick Smith style kits are not quite fast enough.
>
> Have a look at http://www.bitscope.com

 and also at:
http://www.chocbar.demon.co.uk/
members.nbci.com/davidjones/dsoa_mk3.htm
members.ozemail.com.au/~dljones/files/dsoamk3.txt
http://www.ee.washington.edu/conselec/CE/sp95reports/guterman/final/scope1.htm

but at 500ks/s I think there are cheaper solution by interfacing 8 bit ad
directly on isa bus.

Vasile

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