Hi,
I have designed a small PIC board and have chosen a resonator with built in CAPs.
Here is the resonator I have chosen to use, I think the data sheet states +/- .3% Freq Stability
http://www.abracon.com/Resonators/awcr.pdf
Are typical crystals more accurate?
Thanks
Ron
Resonators or Crystals
- Benj
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Re: Resonators or Crystals
Hello Ron
A standard crystal will have an accuracy of +/- 20ppm or 0.002% , resonators are much less accurate in general.
A standard crystal will have an accuracy of +/- 20ppm or 0.002% , resonators are much less accurate in general.
Regards Ben Rowland - MatrixTSL
Flowcode Product Page - Flowcode Help Wiki - Flowcode Examples - Flowcode Blog - Flowcode Course - My YouTube Channel
Flowcode Product Page - Flowcode Help Wiki - Flowcode Examples - Flowcode Blog - Flowcode Course - My YouTube Channel
Re: Resonators or Crystals
Hi,
OK, so I want to use a crystal, what type of caps are required?
Will these work http://www.mouser.com/Search/Refine.asp ... 180J-TB-RC
The crystals I want to user are http://www.mouser.com/Search/ProductDet ... 9Z2EojU%3d
Thanks
Ron
OK, so I want to use a crystal, what type of caps are required?
Will these work http://www.mouser.com/Search/Refine.asp ... 180J-TB-RC
The crystals I want to user are http://www.mouser.com/Search/ProductDet ... 9Z2EojU%3d
Thanks
Ron
- Benj
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Re: Resonators or Crystals
Hello
I normally use a value of 22pF but im sure the 18pF caps there will work fine. Your crystals look fine.
I normally use a value of 22pF but im sure the 18pF caps there will work fine. Your crystals look fine.
Regards Ben Rowland - MatrixTSL
Flowcode Product Page - Flowcode Help Wiki - Flowcode Examples - Flowcode Blog - Flowcode Course - My YouTube Channel
Flowcode Product Page - Flowcode Help Wiki - Flowcode Examples - Flowcode Blog - Flowcode Course - My YouTube Channel
Re: Resonators or Crystals
Hi,
I will check to see if I can get this cap in a 22pf version.
Thank you,
Ron
I will check to see if I can get this cap in a 22pf version.
Thank you,
Ron
Re: Resonators or Crystals
Hi Ben,
How accurate are the internal OSC on the newer PICs, 16F887, 18F2620? I could not locate anything regarding this ini the datasheets.
Thanks
Ron
How accurate are the internal OSC on the newer PICs, 16F887, 18F2620? I could not locate anything regarding this ini the datasheets.
Thanks
Ron
- Dan81
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Re: Resonators or Crystals
you can find this data page 256 (or 257) for the 16F887
Daniel
Daniel
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