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DAC Cal. Time for AD9914

Question asked by Sercan on Nov 6, 2014
Latest reply on Nov 7, 2014 by Sercan

Hi,

 

What is the required DAC Cal. Time for AD9914 when Fsystem is 3GHz?

 

Info:
Datasheet says that Tcal = 469,632 / Fsystem (page.20)
So, answer is minimum 157 ns.
But, datasheet says that Maximum DAC Calibration Time (Tcal) is 135 us. (page.5)
So, in order to verify when i check the informations i make calcs.
-- Maximum Tcal should be for Fsystem = 500 MHz and it is 470 / 500 MHz = 940 ns

-- Minimum Tcal should be for Fsystem = 3,5 GHz and it is 470 / 3,5 GHz = 135 ns

 

So, i fall in to confuse.
Can datasheet have a typing error?

(page.5) // (DAC Calibration Time (Tcal) is min: 135 ns. max: 940 ns.  ???)

 

Main question is:

What is the required DAC Cal. Time for AD9914 when Fsystem is 3GHz?
Should it be minimum 470 / 3 GHz = 156 ns?

 

Regards,
Sercan

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