[time-nuts] 32.768Khz Crystal/Resonator suggestions.

[Volker Esper]

Hi Dan,

I beg your pardon for being so curious, but where do you have to put
electronics in a thousand G's at 100Hz?

Thank you

Volker



Am 01.11.2013 17:30, schrieb Dan Kemppainen:
> Hi all,
>
> I've got a project upcoming that will require a frequency of 32.768 Khz
> in a harsh environment (Imagine a thousand G's at 100Hz with 150 Deg C
> temperatures). Also, this thing needs to be small, 2mmx1.5x1.5mm or so.
> It also has to be low power. Frequency stability is probably less of a
> concern than just surviving (some frequency error vs. temp can be
> trimmed out with other smarts in the design.
>
>
> In the past, crystals just haven't liked surviving due to the
> construction. Have had good luck with ceramic resonators at higher
> frequencies (50Mhz and up). I've also looked at silicon oscillators,
> which will work in the application, however with the chip and associated
> resistors/caps they get a little bigger that what I was hoping for.
>
> Is anyone aware of a frequency source (crystal/resonator or other) in a
> small package that is robustly mounted?
>
> Or are there any ceramic resonators available that are in small packages
> in those low frequencies? I checked the big distributors, and did not
> have any luck.
>
>
> Dan
>
>
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