Crystal oscillator yog tus yuam sij hauv cov qauv txheej txheem digital. Feem ntau, hauv Circuit Coadcuit Tsim, Crystal Oscillator tau raug suav tias yog lub plawv ntawm Circuit Court. Txhua txoj haujlwm ntawm Digarable los ntawm clock teeb liab, thiab crystal oscillator yog lub khawm tseem ceeb uas tswj hwm qhov pib ntawm tag nrho cov kab ke. Nws tuaj yeem hais tias Crystal oscillator tuaj yeem pom qhov twg muaj cov qauv digital.
Cov ntsiab lus txhais ntawm cov muaj lead ua oscillator
Crystal oscillator feem ntau hais txog Quartz Crystal Oscillator thiab Quartz Crystal Resononator, thiab tseem tuaj yeem hu ua Crystal oscillator. Yog tsim los ntawm kev siv cov txiaj ntsig piezoelectric ntawm Shi Ying Crystal.
Nws lub hauv paus kev ua haujlwm yog li hauv qab no: Thaum muaj hluav taws xob teb tau thov rau ob lub electrodes ntawm cov siv lead ua, lub crystal yuav ua mechanically deformed; Hloov siab, yog tias ib qho kev siv tshuab tau thov rau ob qho kawg ntawm cov siv lead ua, lub lead ua cov siv lead ua yuav tsim hluav taws xob. Qhov tshwm sim no tau thim rov qab, yog li noj kom zoo dua cov xeeb ceem ntawm cov siv lead ua thiab siv hluav taws xob kev co thiab hloov hluav taws xob teb tib lub sijhawm. Txawm li cas los xij, qhov kev co thiab hluav taws xob teb tsim los ntawm cov muaju feem ntau, tab sis ntev npaum li lawv tau ua kom muaj LC Circuit Revesers feem ntau pom.
2 Ntawm Crystal oscillator
Passive Crystal OscillatoR yog lub lead ua, feem ntau 2- pin nipgolar ntaus ntawv (qee cov crystal etcillators muaj cov pins kho tsis tau). Feem ntau, lub peev xwm dhau los muaj peev xwm tsim cov teeb liab oscillation tuaj yeem tsim cov teeb liab oscillation (sine yoj teeb liab) los ntawm kev sau cov circuit Court tsim los ntawm lub twj tso hluav taws xob.
Cov nquag siv lead ua oscillator yog ib qho oscillator, feem ntau nrog plaub pins. Nquag Crystal oscillator tsis xav tau sab hauv oscillator ntawm CPU los tsim cov phiaj xwm yoj square. Ib qho kev nquag siv lub crystal oscillator tuaj yeem tsim lub cim teeb liab los ntawm kev muab hluav taws xob.
Nquag Crystal Oscillator muaj cov teeb liab ruaj khov, zoo sib txuas hom, me dua qhov kev ua yuam kev thiab ntau dua tus nqi kim dua li passstal crystal oscillator.
3 Qhov sib npaug ntawm Crystal Oscillator
Qhov tseeb, cov lead ua oscillator ua zoo li series RLC Circuit. Qhov sib npaug sib xyaw ntawm lub crystal oscillator Qhia cov RLC Circilator qhia tau cov khoom siv hluav taws xob ua ke, thiab lub crystal oscillator ua haujlwm ntawm series resonance.
4 Qhov yooj yim ntawm cov siv lead ua oscillator
Cov ntsiab lus yooj yim ntawm General Crystal muaj leads yog: ua hauj lwm tus nqi, piv rau capensance, ntim daim ntawv, tseem ceeb zaus thiab lwm yam.
Core zaus ntawm cov siv lead ua rau muaj cov khoom: feem ntau, cov kev xaiv ntawm cov siv roj me, xws li MCU, uas feem ntau nyob rau hauv ntau, feem ntau yog xws li 4m mus rau kaum ntawm M.
Precision ntawm crystal crystal oscillator: qhov precillator: feem ntau tsis pub dhau 5 ppm, thiab nws yuav raug xaiv nyob ib ncig 20 ppm nyob rau hauv kev siv dav dav.
Sib txuam crystal oscillator: feem ntau, zaus, cov tub ntxhais zaus ntawm cov siv lead ua oscillator tuaj yeem hloov kho qhov tseem ceeb ntawm kev sib txuam. Ntawm tam sim no, hom no tau siv los kho cov crystal oscillator nrog lub siab precision.
