[time-nuts] Bye-Bye Crystals

Bob Camp kb8tq at n1k.org
Mon Mar 13 22:01:10 EDT 2017


If your application is happy with 0.1% accuracy, you use a simple crystal that costs 
< 10 cents. If your application requires <0.001% accuracy, you probably are better 
off using a packaged oscillator. 


> On Mar 13, 2017, at 8:11 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> jimlux at earthlink.net said:
>> what about cheap crystals for microcontrollers.. I think the Arduino,  for
>> instance, uses a crystal (and the oscillator electronics are inside  the
>> Atmel part) 
> I assume you can save a few pennies if you use a raw crystal rather than an 
> oscillator.  That probably matters in high volume low cost applications.
> Atmel has the technology for making oscillators.  That's an analog-ish corner 
> on what is mostly a digital chip.  A lot of their chips are low standby power 
> which generally means an older digital process with thicker oxides that don't 
> leak as much.  That probably makes analog corners easier, but I'm far from a 
> wizard at that area.
> -- 
> These are my opinions.  I hate spam.
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