Anonymous
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Oct 17, 2016
07:13 PM
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Oct 17, 2016
07:13 PM
Hello,
what is the IMO percent accuracy over the full temperature and voltage range with a 32.768-kHz External Crystal Oscillator (PLL Mode)?
I read in (AN2027 PSoC® 1 - 32.768-kHz External Crystal Oscillator) "the IMO can be as accurate as the ECO itself". Does this mean the IMO operate with a CM7V-T1A (http://www.microcrystal.com/images/_PDF/3_Crystal_Ceramic-Package/cm7v-t1a.pdf) 0.01%?
Thank you
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PSoC 1
3 Replies
Oct 18, 2016
02:34 AM
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Oct 18, 2016
02:34 AM
You're right.
Precision of the crystal was listed as 100ppm = 0.000001 * 100 which is 0.0001 = 0.01%
this is nearly one minute/year.
The 20ppm version is even more precise. Resulting in a devitation of about 10s/a
Bob
Anonymous
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Oct 18, 2016
02:06 PM
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Oct 18, 2016
02:06 PM
Thank you very much, Bob! Stands "10s/a" for "10 seconds/year"?
Oct 19, 2016
12:20 AM
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Oct 19, 2016
12:20 AM
Yes, "a" is the physics abbreviation for "annum" which is "year"
Bob