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partfinder:crystals [2016/01/28 18:05]
partfinder:crystals [2016/01/28 18:05] (current)
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 +**WANT MORE??** Dont forget to see everything else in the [[partselector:​|Part selector index]]!
  
 +
 +===== Crystals =====
 +
 +Notes on crystals:
 +  * Crystals are high precision timekeeping devices - much better than resonators - but are more $ and may require capacitors
 +  * Frequencies may vary with temperature and the capacitors used
 +  * In general we'll have the larger/​cheaper packages
 +  * If you need to have matching capacitors, pick ones a couple pF smaller than double the load capacitance rated. For example, a 12.5pF clock crystal would take ~20pF caps
 +
 +^ Image ^ Description ^ Part # and datasheet ^ Distributors ^  Eagle lib.  ^
 +| {{http://​www.ladyada.net/​images/​parts/​crystalcyl_t.jpg}} | 32.768 KHz (12.5pF) for timekeeping | [[http://​www.abracon.com/​Resonators/​AB38T.pdf|Generic]] | [[http://​www.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail&​name=535-9034-ND|Digikey]] [[http://​mouser.com/​Search/​ProductDetail.aspx?​qs=sGAEpiMZZMtg8rPr%252bGIKJmkxQqIPZPL8Se0a4BCRnM4%3d|Mouser]] |  crystal:​TC38H ​ |
 +|  {{http://​www.ladyada.net/​images/​parts/​5mhzcrystal_t.jpg}} | 5.0000 MHz in HC-49 package | [[http://​www.ecsxtal.com/​store/​pdf/​hc49ux.pdf|Generic]] | [[http://​search.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail?​name=X989-ND|Digikey]] [[http://​www.mouser.com/​Search/​ProductDetail.aspx?​qs=H8AWquzS%2FlO62TyBBkCFzw%3D%3D|Mouser]] |  crystal:​HC49 ​ |
 +|  {{http://​www.ladyada.net/​images/​parts/​hc49u_t.jpg}} ​ | 3.579545 MHz ("​colorburst"​) crystal | [[http://​www.ecsxtal.com/​store/​pdf/​hc49ux.pdf|Generic]] | [[http://​search.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail?​name=X079-ND|Digikey]] [[http://​www.mouser.com/​Search/​ProductDetail.aspx?​qs=2xLVn2jvFusFbv3v5Whu4Q%3d%3d|Mouser]] |  crystal:​HC49 ​ |
 +|  either CYL or HC49  | 28.63636MHz Crystal | [[http://​www.citizencrystal.com/​images/​pdf/​m-hc49us.pdf|Generic]] ​ |  [[http://​search.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail?​name=300-8517-ND|Digikey]] [[http://​www.mouser.com/​Search/​ProductDetail.aspx?​qs=GgB7MJ%2fTIsQs%2fWKCt7j7Og%3d%3d|Mouser]] |  crystal:​TC38H ​ |
 +===== Resonators =====
 +Notes on Resonators:
 +
 +    * Resonators are reasonable-precision timekeeping devices - not as good as crystals but better than RC oscillators. Cheap & easy to use
 +    * Frequencies may vary with temperature and voltage used
 +    * Theres a couple manufacturers so we have multiple links
 +    * They have built in capacitors so just connect middle pin to ground and the outer two to the crystal pins of your oscillator
 +
 +^ Image ^ Description ^ Part # and datasheet ^ Distributors ^  Eagle Lib.  ^
 +|  {{http://​www.ladyada.net/​images/​parts/​xtal16m_t.jpg}} ​ | 16.00 MHz ceramic oscillator with caps  | [[http://​www.ecsxtal.com/​store/​pdf/​zttr.pdf|ZTT-16.00]] \\ [[http://​www.abracon.com/​Resonators/​awcr.pdf|AWCR-16.00MD]] \\ [[http://​www.murata.com/​catalog/​p16e18.pdf|CSTLS16M0X55]] | [[http://​www.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail?​name=X908-ND|Digikey]] [[http://​www.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail&​name=490-1214-ND|Digikey]] \\ [[http://​www.mouser.com/​ProductDetail/​ABRACON/​AWCR-1600MD/?​qs=sGAEpiMZZMsBj6bBr9Q9aZwSgYMCcq7%2fcMTJQczuqac%3d|Mouser]] [[http://​www.mouser.com/​ProductDetail/​ECS/​ZTT-1600MX/?​qs=A5Qiz0JZgg6Zglf9C77YkQ%3d%3d|Mouser]] |  [[http://​www.ladyada.net/​library/​pcb/​eaglelibrary.html|Adafruit:​CERMOSCILL]] ​ |
 +|  {{http://​www.ladyada.net/​images/​parts/​8MHzcermosc_t.jpg}} ​ | 8.00 MHz ceramic oscillator with caps | [[http://​www.ecsxtal.com/​store/​pdf/​zttr.pdf|ZTT-8.00]] \\ [[http://​www.abracon.com/​Resonators/​awcr.pdf|AWCR-8.00MD]] \\ [[http://​www.murata.com/​catalog/​p16e18.pdf|CSTLS8M0X55]] | [[http://​www.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail&​name=490-1223-ND|Digikey]] [[http://​www.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail&​name=X905-ND|Digikey]] \\ [[http://​www.mouser.com/​ProductDetail/​Murata/​CSTLS8M00G53-B0/?​qs=sGAEpiMZZMsBj6bBr9Q9abaXaKxoavYLgZ8eN7Q5mnE%3d|Mouser]] [[http://​www.mouser.com/​ProductDetail/​TDK/​FCR80MC5/?​qs=sGAEpiMZZMsBj6bBr9Q9aVpiy1fX3S309ymr3bnig20%3d|Mouser]] [[http://​www.mouser.com/​ProductDetail/​ABRACON/​AWCR-800MD/?​qs=sGAEpiMZZMsBj6bBr9Q9aZwSgYMCcq7%2fZcInC2wzFEc%3d|Mouser]] |  [[http://​www.ladyada.net/​library/​pcb/​eaglelibrary.html|Adafruit:​CERMOSCILL]] ​ |
 +|  {{http://​www.ladyada.net/​images/​parts/​cermosc12mhz_t.jpg}} ​ | 12.00 MHz ceramic oscillator with caps | [[http://​www.ecsxtal.com/​store/​pdf/​zttr.pdf|ZTT-12]] ​ |  [[http://​www.mouser.com/​ProductDetail/​ECS/​ZTT-1200MT/?​qs=sGAEpiMZZMsBj6bBr9Q9aZIadeecJwnJPm%2fM1ZYej7A%3d|Mouser]] ​ [[http://​search.digikey.com/​scripts/​DkSearch/​dksus.dll?​Detail&​name=X907-ND|Digikey]] ​ |  [[http://​www.ladyada.net/​library/​pcb/​eaglelibrary.html|Adafruit:​CERMOSCILL]] ​ |
/home/ladyada/public_html/wiki/data/pages/partfinder/crystals.txt · Last modified: 2016/01/28 18:05 (external edit)