>>If you are looking at the performace of AD7793, the other
>>possibility is to look at Silabs C8051F060 which has
>>integrated best-in-class ADC for Microcontrollers
>>(2ch 16bit ADC up to 1Msps).

> If we get signal the temperature is changing fast enough 
> to need a
> 1Msps ADC I think somebody set up us the (nuclear) bomb.

But, no ...
Unless perhaps it's an incoming one, as Mach 6.

>From a recent list posting to another list
The 1 Msps will get you down to 1/16" resolution at Mach 6 
:-)

        R

>I recall some recent discussion on ARocket about wind
>tunnels and thought some of you might find this article
>about the Boeing/AFOSR Mach 6 Quiet Tunnel interesting...
>
> http://news.uns.purdue.edu/x/2008a/080102SchneiderX51.html
>
> "To measure the airflow velocity and turbulence, the
> researchers use a heated wire about one-tenth the diameter
> of a human hair. The higher the speed of the airflow, the
> more the wire is cooled and the greater the electrical
> current needed to maintain the wire's hot temperature.
> Monitoring the changing current needed to maintain the
> wire's temperature reveals the changing air speed at
> fluctuations of up to 250,000 times per second."

& Russell said:

An update every quarter of an inch or so at Mach 6 :-)


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