[time-nuts] 5 MHZ PIC PPS Divider?
hmurray at megapathdsl.net
Tue Apr 15 17:42:53 EDT 2008
> a ECL 8-Bit Ripple Counter. And a 1Ghz oscillator make the measurement
> of differences. This should get me to the 1ns level ?
Or try a FPGA...
They run at 250 MHz so all you need is 4 clock phases.
The other approach would be to make a delay line that's longer than a single
clock and has many FFs along the way. I'm not sure how to calibrate that and
keep it calibrated as power/temp change.
These are my opinions, not necessarily my employer's. I hate spam.
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