On 4/12/2015 6:30 PM, Attila Kinali wrote:
It might be that I'm already too sleepy, but I don't see why
a faster comparator would add more jitter. Actually, my intuition
(which is clearly wrong) would say the contrary. So, which effect
does increase the jitter with comparator speed?
The faster the comparator, the greater its analog bandwidth.
Thus there is more total noise to cause jitter. The DC to
daylight comparator is the opposite of the John Dick (JPL)
paper on zero crossing detectors in PTTI around 1990. John
teaches that you use the MINIMUM bandwidth amplifier to
square up a sine wave.
BTW: If anyone here has any good text to read on oscillator design,
please let me know. I'm collecting those :-)
Attila Kinali
Start by reading everything by:
Marv Frerking
Mike Driscoll
John Vig
Oh, and I wrote a few papers on oscillators myself :-)
Rick
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