[time-nuts] Help with TCXO

Attila Kinali attila at kinali.ch
Tue Dec 6 09:40:51 EST 2011


On Tue, 29 Nov 2011 16:09:34 +0100
Azelio Boriani <azelio.boriani at screen.it> wrote:

> FPGA time interval counter? With an analog interpolator? No? Then, at most,
> you will get a nS resolution. I have a 2.5nS resolution TIC with 100MHz
> clock using four phases from the Xilinx DCM in a Spartan3.

I'm quite sure you can do better than ns resolution with an analog
interpolator. Heck, even the PICTIC does something arount 200ps 
if i'm not mistaken. And the PICTIC has a quite simple design too.

				Attila Kinali
-- 
The trouble with you, Shev, is you don't say anything until you've saved
up a whole truckload of damned heavy brick arguments and then you dump
them all out and never look at the bleeding body mangled beneath the heap
		-- Tirin, The Dispossessed, U. Le Guin




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