Crystal oscillator waa furaha naqshadaynta wareegyada dhijitaalka ah, sida caadiga ah naqshadaynta wareegga, oscillator crystal waxaa loo isticmaalaa wadnaha wareegga dhijitaalka ah, dhammaan shaqada wareegga dhijitaalka ah waa mid aan la kala sooci karin calaamadaha saacadda, kaliya oscillator crystal waa badhanka furaha. taas oo si toos ah u xakameynaysa bilawga caadiga ah ee nidaamka oo dhan, waxaa la odhan karaa haddii ay jirto naqshad wareeg ah oo dijital ah waxay arki kartaa oscillator crystal.
I. Waa maxay oscillator-ka crystal?
Crystal oscillator guud ahaan waxaa loola jeedaa laba nooc oo ah oscillator crystal oscillator iyo quartz crystal resonator, waxaana sidoo kale si toos ah loogu yeeri karaa oscillator crystal.Labadaba waxaa lagu sameeyay iyadoo la adeegsanayo saameynta piezoelectric ee kiristaalo quartz.
Oscillator-ka kristal wuxuu u shaqeeyaa sidan: marka beer koronto lagu dhejiyo labada electrodes ee crystal, crystal wuxuu yeelan doonaa cillad farsamo, taas lidkeeda, haddii cadaadiska makaanikada lagu dhejiyo labada daraf ee crystal, crystals ayaa soo saari doona. beer koronto.Dhacdadani waa mid dib loo rogi karo, markaa iyadoo la adeegsanayo sifada kristanta, ku darista tamarta beddelka ah ee labada daraf ee crystal, chip wuxuu soo saari doonaa gariir farsamo, isla mar ahaantaana wuxuu soo saaraa beero koronto oo beddelan.Si kastaba ha ahaatee, gariirkan iyo goobta korantada ee ay abuurto crystal-gu guud ahaan waa yar yahay, laakiin inta ay tahay inta jeer ee cayiman, baaxadda ayaa si weyn loo kordhin doonaa, oo la mid ah resonance LC loop oo aan naqshadeeyayaasha wareegga inta badan aragno.
II.Kala soocida oscillation crystal (firfircoon iyo dadban)
① oscillator crystal Passive
crystal Passive waa crystal, guud ahaan 2-pin qalab aan polar ah (qaar ka mid ah crystal dadban ayaa leh biin go'an oo aan lahayn polarity).
Oscillator crystal Passive wuxuu guud ahaan u baahan yahay inuu ku tiirsanaado wareegga saacada ee uu sameeyay capacitor-ka xamuulka si uu u dhaliyo calaamada oscillating (caleenka mawjadda sine).
② oscillator crystal firfircoon
Oscillator-ka firfircooni waa oscillator, badiyaa leh 4 biin.Oscillator-ka firfircooni uma baahna oscillator-ka gudaha ee CPU si uu u soo saaro calaamada mowjadaha labajibbaaran.Korontada kristal ee firfircoon waxay abuurtaa calaamad saacad ah.
Calaamadaha oscillator-ka firfircooni waa mid deggan, tayada ayaa ka fiican, qaabka isku xirnaantana waa mid fudud, qaladka saxda ah waa ka yar yahay kan oscillator crystal oscillator, qiimuhuna wuu ka qaalisan yahay oscillator crystal.
III.Xuduudaha aasaasiga ah ee oscillator crystal
Halbeegyada aasaasiga ah ee oscillator-ka guud waa: heerkulka hawlgalka, qiimaha saxda ah, awoodda u dhigma, foomka xirmada, inta jeer ee xudunta ah iyo wixii la mid ah.
Inta jeer ee xudunta u ah oscillator-ka crystal: Doorashada soo noqnoqda guud ee crystal waxay kuxirantahay shuruudaha qaybaha soo noqnoqda, sida MCU guud ahaan waa kala duwanaansho, kuwaas oo intooda badan ka socda 4M ilaa daraasiin M.
Saxnaanta gariirka Crystal: saxnaanta gariirka crystal guud ahaan waa ± 5PPM, ± 10PPM, ± 20PPM, ± 50PPM, iwm.
Awoodda u dhigma ee oscillator-ka crystal: sida caadiga ah iyada oo la hagaajinayo qiimaha awoodda u dhigma, inta jeer ee xudunta u ah oscillator-ka crystal waa la bedeli karaa, iyo hadda, habkan waxaa loo isticmaalaa in lagu hagaajiyo oscillator-ka saxda ah ee saxda ah.
Nidaamka wareegga, xariiqda saacadda xawaaraha sare waxay leedahay mudnaanta ugu sareysa.Xariiqda saacadu waa calaamad xasaasi ah, mar kasta oo soo noqnoqoshadana ay sare u kacdo, waxaa loo baahan yahay khadka gaaban si loo hubiyo in qalloocinta calaamaduhu ay yar tahay.
Hadda wareegyo badan, inta jeer ee saacada crystal ee nidaamka waa mid aad u sarreeya, sidaas darteed tamarta faragelinta harmonics sidoo kale waa xoog badan, harmonics ayaa laga soo saari doonaa gelinta iyo soo saarista laba xariiq, laakiin sidoo kale shucaaca booska, taas oo sidoo kale keenta Haddii qaabka PCB ee oscillator-ka crystal-ka uusan ahayn mid macquul ah, waxay si fudud u keeni doontaa dhibaato shucaac ah oo xoog badan, oo marka la soo saaro, way adagtahay in lagu xalliyo habab kale.Sidaa darteed, aad bay muhiim ugu tahay oscillator-ka crystal iyo qaabka khadka calaamadda CLK marka guddiga PCB la dhigo.