Daban-daban Crystal Oscillators: Aikace-aikace da Maɓallin Fasaha a cikin Modulolin Sadarwa na gani

Yayin da fasahar sadarwa ta gani ke ci gaba zuwa mafi girman gudu, girma mai yawa, da ƙarancin amfani da wutar lantarki, kwanciyar hankali da tsangwama na siginar agogo sun zama mahimmanci ga aikin tsarin gaba ɗaya. Daban-daban kristal oscillators, tare da keɓaɓɓen tsarin watsa siginar su, suna ƙara fitowa azaman tushen agogo a cikin na'urori masu gani kamar 400G/800G transceivers na gani.

I. Bukatun agogo da Kalubale a Modulolin Sadarwa na gani

A cikin tsarin sadarwa na gani, na'urorin gani na gani suna da alhakin canza siginar lantarki cikin inganci zuwa siginar gani. Maɓalli masu mahimmanci kamar direbobin laser, TIAs, da da'irori na CDR suna ba da buƙatu masu tsauri akan siginar agogo:

Karancin hayaniyar lokaci da jita-jita: Babban - watsa siginar saurin sauri (misali, 56Gbps PAM4, 112Gbps NRZ) yana buƙatar jitter ya zama ƙasa da 100 fs (matakin na biyu na mata) don hana haɓaka ƙimar kuskuren bit (BER).

Juriya na EMI: A cikin hadadden mahalli na lantarki mai girma{0}}yawancin kayayyaki, agogo guda{1}}arshen suna da saurin yin magana.

Yanayin zafi: Modules dole ne su kula da kwanciyar hankali na mita (± 2.5 ppm ko mafi kyau) akan kewayon zafin jiki (-40 digiri zuwa digiri 85).

II. Fa'idodin Fasaha na Daban-daban Crystal Oscillators

Idan aka kwatanta da oscillators masu ƙarewa ɗaya{0}, bambancin oscillators na crystal suna fitar da sigina guda biyu na lokaci{1}}waɗanda suka juya (misali, LVDS, LVPECL), waɗanda ke haɓaka aikin tsarin sosai:

Ƙarfafa Ƙarfin Tsangwama-

Na gama-gari{0}}ƙimar amo: Masu karɓa daban-daban suna kawar da hayaniyar gama gari (kamar sauyin wuta da EMI) ta hanyar ragi.

Rage hasken EMI: Hanyoyin siginar sigina suna soke filayen lantarki, rage radiation da kusan 20 dB.

Ingantaccen Mutuncin Siginar

Babban kisa: Matsakaicin saurin juzu'i yana rage lokacin tashi da faɗuwa, wanda ke da mahimmanci ga mu'amalar 56Gbps+ SerDes.

Daidaitawar impedance: Alamun bambance-bambance a zahiri sun dace da impedance 100Ω, sauƙaƙe ƙirar PCB.

Ƙarƙashin Ƙarfin Ƙarfi
LVDS{0}}asashen oscillators na bambance-bambance suna cinye 60-70% ƙasa da ƙarfi fiye da guda ɗaya{3}}masu ƙarewa, suna saduwa da ƙananan ƙa'idodin wuta kamar QSFP{5}}DD.

III. Aikace-aikace na yau da kullun a cikin Modulolin gani

Babban - Tushen agogon SerDes Mai Sauri
Aikace-aikacen: Yana ba da agogon tunani don masu gyara PAM4 da da'irori na CDR.
Misali: 100G/400G kayayyaki suna amfani da 156.25 MHz ko 312.500 MHz bambancin oscillators tare da<50 fs RMS jitter (integrated over 12 kHz–20 MHz).

Multi{0}Aikin Tashar
Aikace-aikace: Aiki tare na lokaci a cikin nau'ikan tashoshi da yawa (misali, CFP2/QSFP{4}}DD).
Maɓalli na fasaha: Multi{0}}masu fitar da banbancen oscillators (misali, LVDS-tashar 4) suna rage skew zuwa ±50 ps.

Matsalolin Zazzabi
Bambancin TCXO: Haɗa na'urori masu auna zafin jiki da algorithms ramuwa don cimma daidaiton mitar ± 2.5 ppm akan -40 zuwa digiri 85.

IV. Juyin Masana'antu da Ka'idojin Zaɓin

Hanyoyin Fasaha

Maɗaukakin mitoci: 224 GHz oscillators yanzu suna goyan bayan 1.6T na gani na gani.

Miniaturization: Fakiti 2520 (2.5×2.5 mm) suna maye gurbin fakitin 5032/7050 don CPO (Co{5}}Packaged Optics).

Haɗin kai: Oscillators tare da ginannun masu tace wutar lantarki da watsa bakan suna rage rikitacciyar da'ira.

Mabuɗin Zaɓin Mahimmanci (Mai Girman Masana'antu)

Samfuran Hangjing: 1532C6-156.250K18DTSTL, 1553D-156.250K33DTSTL, 1575C-156.250K33DTSTL, 1532D-312.500J33DTL, 31353DTL

Babban -Natsuwa/Maɗaukaki{1}} Madaidaicin Bukatun
TCXO (LVDS/LVPECL): jerin TC32D6/TC32P6/TC53H8 na Hangjing sun hadu da takamaiman bayanai:

Don manyan ayyuka daban-daban{0} oscillators, da fatan za a tuntuɓi injiniyoyin aikace-aikacen Hangjing don mafita na musamman.

Kammalawa

Daban-daban kristal oscillators, tare da juriyarsu ta EMI, ƙarancin jitter, da fa'idodin haɗin kai, suna da mahimmanci a cikin manyan na'urorin gani na gani na sauri{{0}. Kamar yadda sadarwa ta gani ta ci gaba a cikin zamanin 800G/1.6T, fasahar agogon banbanta za ta ci gaba da tura iyakokin aikin masana'antu.