Re: Missing Schmitt Gates??

On Mon, 3 Dec 2007 10:47:27 -0800, "Joel Koltner"
<JKolstad71HatesSpam@xxxxxxxxx> wrote:

"John Larkin" <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:p1f6l3laoaebkm8i6pihgthn4do0l00cem@xxxxxxxxxx
Tiny schmitts can do analog-like stuff, too, like being the basis for
a boost regulator, or acting as a frequency-counter front end.

By now you've probably used one as a crystal oscillator too, right?


No. I don't design XOs any more. It's too easy to buy a packaged
surface-mount thing that just works, usually within a couple of ppm,
right out of the tube.

Incidentally, Schmitts make rotten XO's, at least the couple of times
I tried it.

A lot of the Tiny gates will pull huge currents if their inputs are
much off the rails. I have thermal images to prove it.

John


.

Relevant Pages

  • Re: Missing Schmitt Gates??
    ... or acting as a frequency-counter front end. ... By now you've probably used one as a crystal oscillator too, ... I thought schmidts were no good for that - you need to bias them into ...
    (sci.electronics.design)
  • Re: Missing Schmitt Gates??
    ... a boost regulator, or acting as a frequency-counter front end. ... By now you've probably used one as a crystal oscillator too, ...
    (sci.electronics.design)