SI5351 clock generator, for 1HZ-100 HZ

[igertner]

Hey there, anyone has micro-power generators di clock 1 hz to 100hz, searched all the web couldn't find anywhere.

[adafruit_support_mike]

I don’t know of anything.

In general, low-speed clocks are created by running a higher-speed clock through a prescaler. For simple applications, you can use a binary counter like the 74x393 (two 4-bit counters) or the CD4020 (a 14-bit counter).

Those are ripple counters, so the rising and falling edges at the output pins aren’t in sync with the upstream clock source or each other, but each output will be as stable as the upstream clock.

There are also synchronous counters whose output pins all change at the same time, and with a small lag after the upstream clock, like the 74x40103 8-bit counter.

[igertner]

Good info, thanks. Now a question for ADAFRUIT: can you design an extension for SI5351 that connects to a prescaler, a binary counter, that would result in a low frequency generator suitable for micro-power audio and medical applications.

[adafruit_support_mike]

We don’t have any plans for such a thing, but I’ll mention it to the products team.