Hi

Do you also require precision in the ~ 1 ps range as well as resolution? 

If so, that opens up a whole series of issues about:

1) How long since it was calibrated
2) Temperature and other environmental effects
3) Traceability of calibration

Not a simple or cheap problem to solve.  

Bob

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Josef Kölbl
Sent: Tuesday, December 14, 2010 7:59 AM
To: [email protected]
Subject: [time-nuts] TAC/TDC

I am looking for a commercial drop-in module/solution of a 
time-to-analog or even time-to-digital converter module with <= 1 ps 
resolution (device should eventually go on a printed-circuit board). 
Critical issues are: linearity, stability, accuracy, jitter and 
precision. The maximum time interval to be measured shall be <= 25 ns. 
Do you know of any commercial products? I will require more than 1 unit.
Thanks.
Josef

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