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silicon vs. quartz oscillators
silicon vs. quartz oscillators
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Old 18th July 2007, 03:56 PM   #1
soundcheck is offline soundcheck  Germany
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Default silicon vs. quartz oscillators

Hi folks.

I stepped over this:


refereing to silicon oscillators as much more reliable than
quartz oscillators.

I never heard anybody discussing silicon oscillators as an alternative solution around here.

Perhaps somebody of the "clocking" specialists around
here could shed some light on the subject.


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Old 19th July 2007, 06:08 PM   #2
rossl is offline rossl  United States
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Location: Central Ohio
I looked at the data sheet for the SiT1 series. They specify 20pS RMS jitter.

There are small, inexpensive crystal oscillators available with low jitter.

Crystec 0.5pS and CTX 1pS. Crystec at Mouser and CTX at Digikey.

The jitter spec is more important to audiophiles than the spec for wide temperature range or the size reduction.

Most of us probably don't need a level of reliability that is necessary for NASA and satellites.
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Old 20th July 2007, 10:06 AM   #3
lcsaszar is offline lcsaszar  Hungary
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While we are at this, what are the usual jitter specs for a TCXO? I have a fairly large (about 2" x 2") Motorola TCXO with an internal 4 MHz crystal, a Colpitts oscillator and a 2-stage 74HC74 binary divider to 1 MHz. I replaced the crystal to 16.9344 MHz, and now it is serving in my Marantz CD-74. Is there a simple home method to measure/estimate/compare jitter values of different oscillators?
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