Re: Digital Crystal Oscillator



On Jan 4, 5:19 pm, rickman <gnu...@xxxxxxxxx> wrote:

I'm not sure what your 1 uA figure refers to.  

The document you linked to, uses 32.768Khz, so that was
the data point I took the thread to apply to : 32.768KHz Crystals

viz: 1-5uA is the ballpark for operational 32,768KHz oscillators.

MY need is for an
oscillator in the range of 300 kHz to 1 MHz.  If you buy a canned
oscillator they aren't drawing 1 uA.  The lowest I can find is 3 mA
and that is an all silicon unit.

err, but 300KHz -1MHz is rather no-mans-land in Crystal terms ?

Digikey lists 1MHz xtals at $17, and jumps to 307KHz ones at $5.00 ?

Or, did you mean a Digital Ceramic Resonator Oscillator ?

For ~455KHz Murata resonator, and 2V swing, a power budget of 10-20uA
is reasonable. (and 0.3%-0.5% tolerance)

-jg


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