Marka ay tignoolajiyada isgaadhsiinta indhaha ahi u socoto xawli sare, cufnaan badan, iyo isticmaalka tamarta hoose, xasiloonida iyo ka-hortagga{0}waxqabadka calaamadaha saacada ayaa fure u noqday waxqabadka nidaamka guud. Oscillators-ka kala duwan ee crystal, oo leh habka gudbinta calaamadaha gaarka ah, ayaa si isa soo taraysa u soo baxaya sida ilaha saacada udub dhexaadka u ah qaybaha indhaha sida 400G/800G transceivers indhaha.
I. Shuruudaha iyo Caqabadaha Saacadaha ee Modules Isgaarsiineed
Nidaamyada isgaarsiinta indhaha, modules-yada indhaha ayaa mas'uul ka ah inay si hufan ugu beddelaan calaamadaha korantada calaamadaha indhaha. Qaybaha muhiimka ah sida darawallada laysarka, TIAs, iyo wareegyada CDR waxay soo rogaan shuruudo adag calaamadaha saacadaha:
Sawaxanka wejiga hooseeya iyo qaylada: Sare - gudbinta signalada xawliga ah (tusaale, 56Gbps PAM4, 112Gbps NRZ) waxay u baahan tahay jitter in uu ka hooseeyo 100fs (heer labaad femtosecond) si looga hortago korodhka heerka qaladka yara (BER).
Iska caabbinta EMI: Deegaanka korantada ee kakan ee - modules cufnaanta, saacadaha kaliya - ayaa u nugul hadalka.
Degganaanshaha heerkulka: Modules waa inay ilaaliyaan xasilloonida soo noqnoqda (± 2.5 ppm ama ka fiican) heerkul ballaaran oo kala duwan (-40 darajo ilaa 85 darajo).
II. Faa'iidooyinka Farsamada ee Oscillators Crystal kala duwan
Marka la barbar dhigo hal {{0} oscillators dhamaad ah, oscillators crystal kala duwan waxay soo saartaa labo waji{1}} calaamado kala geddisan (tusaale, LVDS, LVPECL), kaas oo si weyn u wanaajiya waxqabadka nidaamka:
Kahortagga la xoojiyey{0}Awoodda faragelinta
Diidmada qaylada caadiga ah - Qaabka caadiga ah: Heelayaasha kala duwani waxay tirtiraan - qaylada caadiga ah (sida isbedbeddelka korantada iyo EMI) iyada oo la kala jarayo.
Shucaaca EMI oo la dhimay: Waddooyinka calaamada calaamaduhu waxay baabi'iyaan goobaha korantada, iyagoo hoos u dhigaya shucaaca qiyaastii 20 dB.
La Hagaajiyay Daacadnimada Calaamadaha
Heer sare oo dil ah: Isbeddelka cirifka degdega ah ayaa soo gaabinaya kor u kaca iyo wakhtiyada dayrta, taas oo muhiim u ah 56Gbps+ SerDes interfaces.
Is-waafajinta is-waafajinta: Raad-raacyo kala duwan ayaa si dabiici ah u dhigma 100Ω cillad, fududaynta naqshadaynta PCB.
Isticmaalka Awoodda Hoose
LVDS-Oscillators-ka kala duwan ee ku salaysan waxay isticmalaan 60-70% awood ka yar mid keliya{3}}kuwa dhammaatay, oo la kulma heerarka hoose-sida QSFP{5}}DD.
III. Codsiyada caadiga ah ee Modules-ka indhaha
Sarre {{0}Isha Saacadaha Xawaaraha SerDes
Codsiga: Waxay siisaa saacadaha tixraaca ee modulators PAM4 iyo wareegyada CDR.
Tusaale: 100G/400G modules waxay isticmaalaan 156.25 MHz ama 312.500 MHz oscillators kala duwan oo leh<50 fs RMS jitter (integrated over 12 kHz–20 MHz).
Isku xidhka kanaalka badan-
Codsiga: Isku xidhka wejiga ee qaybo badan oo kanaal ah (tusaale, CFP2/QSFP{4}}DD).
Farsamada furaha ah: Multi{{0} oscillators kala duwan wax soo saarka (tusaale, 4-channel LVDS) waxay yareeyaan qalfoofka ilaa ±50 ps.
Magdhawga Heerkulka
Kala duwanaanshaha TCXO: Isku-dubarida dareemayaasha heerkulka iyo algorithm-yada magdhowga si loo gaaro ± 2.5 ppm xasilloonida inta jeer ee ka badan -40 darajo ilaa 85 darajo.
IV. Isbeddellada Warshadaha iyo Tilmaamaha Xulashada
Isbeddellada Tignoolajiyada
Soo noqnoqoshada sare: 224 GHz oscillators hadda waxay taageeraan 1.6T modules indhaha.
Yaraynta: 2520 xirmo (2.5×2.5 mm) ayaa bedelaya 5032/7050 xirmo ee CPO (Co-Baakad Optics).
Is dhexgalka: Oscillators leh -kujira shaandhada korantada iyo faafinta spectrum waxay yareeyaan kakanaanta wareegga
Shuruudaha Xulashada Furaha (Darajada Warshadaha)
|
Halbeegga |
Shuruudaha Caadiga ah |
|
Xaddiga Soo noqnoqda |
10-3000 MHz |
|
Deganaanshaha Joogtada ah |
± 25 ppm |
|
Wajiga Jitter |
<100 fs RMS (12k–20M) |
|
Nooca wax soo saarka |
LVDS/LVPECL/HCSL |
|
Heerkulka shaqada |
-40 darajo ilaa +105 darajo |
|
Isticmaalka Korontada |
<80 mW (LVDS) |
Qaababka Hangjing: 1532C6-156.250K18DTSTL, 1553D-156.250K33DTSTL, 1575C-156.250K33DTSTL, 1532D-312.500J33DTL, 1353.TL
Sare -Xasilooni/Sare-Shuruudaha Saxda ah
TCXO (LVDS/LVPECL): Taxanaha Hangjing TC32D6/TC32P6/TC53H8 waxa uu la kulmaa tilmaamo adag:
|
Halbeegga |
Shuruudaha Caadiga ah |
|
Xaddiga Soo noqnoqda |
10-3000 MHz |
|
Xaqiijinta Joogtada |
± 1.0 ppm |
|
Xasilooni |
±2.5 ppm @ -40 darajo ilaa +85 darajo |
|
Wajiga Jitter |
<100 fs RMS (12k–20M) |
|
Nooca wax soo saarka |
LVDS/LVPECL |
|
Heerkulka shaqada |
-40 darajo ilaa +85 darajo |
|
Isticmaalka Korontada |
<80 mW (LVDS) |
Waxqabadka sare{{0}Oscillators kala duwanaanshaha waxqabadka, fadlan la xidhiidh injineerada arjiga Hangjing xalal la habeeyey.
Gabagabo
Oscillators crystal kala duwan, oo leh iska caabintooda EMI, jitter hoose, iyo faa'iidooyinka isdhexgalka, ayaa lama huraan u ah - modules indhaha xawaaraha sare. Sida isgaadhsiinta indhaha ee hore u sii socoto 800G/1.6T, tignoolajiyada saacadaha kala duwan ayaa sii wadi doona inay riixdo xuduudaha waxqabadka warshadaha.
