[time-nuts] NCOCXO anyone?

Hal Murray hmurray at megapathdsl.net
Fri Jul 22 15:28:08 EDT 2016


attila at kinali.ch said:
> You can already get 24bit DAC's off the shelf from TI (DAC1282). I do not
> know how stable they are in reality. ...

There are 2 markets for DACs and ADCs.  I'll call them DC and RF, but the RF 
goes down to audio.

In the DC market, the data sheet talks about linearity and usually covers 
temperature stability.

In the RF market, the data sheet has Fourier transform plots when the input 
is a clean sine wave or pair of sine waves.   Think software radios, radar or 
spread spectrum.  The usual one term summary is ENOB: Effective Number of 
Bits.

In the RF market, nobody cares about temperature drift.


-- 
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