[time-nuts] Thermal Compensation: Digital vs Analog
magnus at rubidium.dyndns.org
Sat Mar 1 08:38:06 EST 2014
On 26/02/14 17:09, Bob Stewart wrote:
> I've been experimenting with digital thermal compensation on my GPSDO. The results have been favorable for a 14 bit dithered PWM-based DAC, but leaves a bit to be desired in the big picture. And it takes up a lot of program bytes on my PIC.. What's the general consensus on this? Should thermal compensation be completely analog?
Considering that time-constants can be fairly long, there is a benefit
in having at least that part of the integrator in digital domain.
There are benefits of both approaches. Resolution of input and output
can be a problem for the digital solution.
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