[time-nuts] 10 MHz -> 16 MHz

Bob kb8tq kb8tq at n1k.org
Mon Oct 1 15:40:49 EDT 2018


Hi

If the device is attaching to a micro controller (as in the original request), feeding it a few 
bits to get it set up may not add any parts at all. No, that’s not a certainty, but it usually 
is a pretty good guess. Most micro’s these days will start up on an internal clock source so
even the “what to use at time zero” issue is taken care of.

Bob

> On Oct 1, 2018, at 1:24 PM, Richard (Rick) Karlquist <richard at karlquist.com> wrote:
> 
> 
> 
> On 10/1/2018 9:01 AM, ew via time-nuts wrote:
>> I made a mistake in the previous post we use the ICS 570 with very good results in many applications. So it was easy to test. This has to be the easiest and lowest cost circuit. Start with an AC14 ST, followed by a divide by 5. I used part of a HC390 but a LS 90 will do. Take the 2 MHz output feed the input of the 570 and select 16X out comes 32 and 16 MHz. Material cost less than $ 5 regulator included.
>> Bert Kehren
> 
> The big advantage of the ICS570 vs 99% of the other solutions
> is that it does not require a microcontroller to baby sit it.
> For a quick and easy solution, that aspect trumps everything
> else.
> 
> At least for me. I took 1 course in Fortran 50 years ago,
> and that was the extent of my software education.
> During my whole career, I have too busy being well
> paid to design hardware, to have any time left over to
> learn software.  After Fortran was over, there was the Pascal
> fad, then the C fad, etc, now I guess Python is the latest.
> Never got involved in any of that.
> 
> Rick N6RK
> 
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