[time-nuts] Generating a solid PPS from 10Mhz source

Gerhard Hoffmann dk4xp at arcor.de
Sat Jan 16 18:42:07 EST 2016


Am 16.01.2016 um 15:03 schrieb Bob Camp:
> Unlike the world of lithography, the dicing process has not made a lot of progress.
> Decades ago a 1mm x 1 mm die was about as small as you could get. From what
> I can see that has not dropped by more than a factor of two in 40 years (if at all).
> Yes, there’s a lot more to it than just a dicing saw. Things like bond wire attach
> also figure in. It still takes a certain size bond wire to carry a practical amount
> of current …
>
> The net result *could* be a process that does a gate or function  in < 1% of the available
> area. Everything else is just empty space along for the ride (or to provide attach
> points).
>

Already 30 years ago when I took my chip design lessons, there
were chips that were pad-bound. If they had, say, 14 Pins, there
was no point to compress everything together since the pad
locations and the bonding dictated the minimum chip size.

regards, Gerhard



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