Ina ia faʻamautinoa le lelei o le tuʻuina atu o faʻailoga, faʻaitiitia le faʻalavelave EMI, ma pasi le faʻamaoniga o suʻega faʻalavelave talafeagai, PCB e manaʻomia le faʻatusaina o le faʻailoga faʻailoga autu. O lenei taʻiala mamanu e faʻavae i luga o le faʻatusatusaga masani, uiga faʻailoga o oloa TV, PCB Layout manaʻomia, SI9000 faʻatulagaina polokalama, faʻamatalaga faʻamatalaga PCB ma isi, ma mulimuli ane oʻo mai i le mamanu fautuaina. Talafeagai mo le tele o PCB sapalai ‘faasologa faiga ma mamanu laupapa PCB ma impedance mana’omia.

Tasi. Fuafuaga impedance panel e lua

① Fuafuaga eleele: lautele laina, vaeluaga 7/5/7mil uaea eleele lautele ≥20mil faailoilo ma eleele uaea mamao 6mil, uma 400mil pu eleele; (2) Fuafuaga e le faʻapipiʻi: lautele laina, vaʻavaʻa 10/5/10mil eseesega paga ma le mamao i le va o le paga ≥20mil (tulaga faʻapitoa e le mafai ona itiiti ifo i le 10mil) e fautuaina e le vaega atoa o laina faʻailoga eseese e faʻaaoga ai le teutusi. talipupuni, fa’ailoga eseese ma le puipuiga o le eleele mamao ≥35mil (tulaga fa’apitoa e le mafai ona itiiti ifo i le 20mil). 90 ohm impedance impedance fautuaina mamanu

Laina lautele, vaeluaga 10/5/10mil Laueleele uaea eleele ≥20mil Fa’ailo ma eleele uaea mamao o 6mil po o le 5mil, grounding pu ta’i 400mil; ②Aua le aofia ai le mamanu:

Ole lautele ole laina ma le va ole 16/5/16mil le mamao i le va ole pa’u fa’ailoga ≥20mil e fautuaina le fa’aogaina o le fa’aofuofu o le eleele mo le vaega atoa o laina fa’ailoga eseese. O le mamao i le va o le eseesega faailoilo ma le uaea eleele puipuia e tatau ona ≥35mil (po o ≥20mil i tulaga faapitoa). Manatu autu: ave le faʻamuamua i le faʻaogaina o le mamanu o le eleele ufiufi, laina puʻupuʻu ma le vaalele atoa e mafai ona faʻaogaina e aunoa ma se mamanu o le eleele ufiufi; Fuafuaga fa’atatau: Plate FR-4, mafiafia ipu 1.6mm +/- 10%, ipu dielectric tumau 4.4 +/-0.2, mafiafia apamemea 1.0 oz (1.4mil) solder mafiafia suauu 0.6±0.2mil, dielectric tumau 3.5 +/-0.3.

Fuafuaga faʻalavelave o le lua ma le fa faʻavae

100 ohm differential impedance fautuaina laina mamanu lautele ma le va 5/7/5mil le mamao i le va o paga ≥14mil(3W criterion) faʻamatalaga: e fautuaina e faʻaoga le faʻaogaina o le eleele mo le vaega atoa o laina faʻailoga eseese. O le mamao i le va o le fa’ailoga fa’aeseesega ma le uaea puipui e tatau ona le itiiti ifo i le 35mil (le itiiti ifo i le 20mil i tulaga fa’apitoa). 90ohm differential impedance Fautuaina laina mamanu lautele ma le va 6/6/6mil Pa’aga ese’ese mamao ≥12mil(3W fa’ata’ita’iga) Manatu autu: I le tulaga o le uaea pa’u eseese umi, e fautuaina e le mamao i le va o itu e lua o le laina ese’ese USB. afifi le eleele ile 6mil e faʻaitiitia ai le lamatiaga o le EMI (afi le eleele ae le o le afifiina o le eleele, laina lautele ma laina mamao tulaga masani e tutusa). Fa’atatauga fa’atatau: Fr-4, mafiafia ipu 1.6mm +/- 10%, ipu dielectric tumau 4.4 +/-0.2, mafiafia apamemea 1.0oz (1.4mil) semi-faamalolo pepa (PP) 2116(4.0-5.0mil), dielectric tumau 4.3+/ -0.2 mafiafia suauu solder 0.6±0.2mil, Dielectric tumau 3.5+/-0.3 fausaga laminated: lau lomitusi laulau solder apa apa apamemea vaega semi- faamaloloina ata tifaga ufiufi apamemea substrate semi- faamaloloina ata apamemea solder apa lau lau lomitusi.

Tolu. E ono laulau laupapa fa’alavelave fa’alavelave

O le fausaga lamination e ono-layer e ese mo taimi eseese. O lenei taʻiala e naʻo le fautuaina o le mamanu o le lamination masani (silasila i le FIG. 2), ma o mamanu fautuaina nei e faʻavae i luga o faʻamatalaga na maua i lalo o le lamination i le FIG. 2. O le impedance design o le pito i fafo e tutusa ma le fa-laupapa laupapa. Talu ai ona o le pito i totonu e masani lava ona sili atu le tele o vaalele nai lo le pito i luga, o le siosiomaga electromagnetic e ese mai i luga ole laiga. O fautuaga nei mo le fa’atonutonuina o le impedance o le vaega lona tolu o uaea (laminated reference Figure 4). 90 ohm differential impedance Fautuaina mamanu laina lautele, laina mamao 8/10/8mil Eseesega palua mamao ≥20mil(3W criterion); Fa’atatauga fa’atatau: Fr-4, mafiafia ipu 1.6mm +/- 10%, ipu dielectric tumau 4.4 +/-0.2, mafiafia apamemea 1.0oz (1.4mil) semi-faamalolo pepa (PP) 2116(4.0-5.0mil), dielectric tumau 4.3+/ -0.2 mafiafia suauu solder 0.6±0.2mil, Dielectric tumau 3.5+/-0.3 fausaga fa’apipi’i: pito pito i luga pupuni fa’apa’apa apa ‘apa fa’amama-fa’amama-fa’alu-kopa mea fa’apipi’i su’ega fa’ama’i fa’ama’i ‘apamemea-fa’aluina su’ega semi-fa’amālōlō ‘apa fa’alava pito pito i lalo puipui puipui.

Mo le sili atu ma le fa pe ono laulau, faʻamolemole fuafua e oe lava e tusa ai ma tulafono talafeagai pe faʻafesoʻotaʻi tagata faʻapitoa e fuafua le fausaga lamination ma le faʻaogaina o le uaea.

5. Afai o loʻo i ai isi manaʻoga faʻalavelave faʻafuaseʻi ona o tulaga faʻapitoa, faʻamolemole fuafua e oe lava pe faʻafesoʻotaʻi tagata talafeagai e fuafua ai le mamanu mamanu

Manatua: ① E tele mataupu e aʻafia ai le faʻalavelave. Afai e manaʻomia le faʻatonutonuina o le PCB e ala i le faʻalavelave, o manaʻoga o le pulea o le impedance e tatau ona faʻamaonia manino i le PCB mamanu faʻamatalaga poʻo le pepa faʻataʻitaʻiga; (2) 100 ohm differential impedance e masani ona faʻaaogaina mo faʻailoga HDMI ma LVDS, lea e manaʻomia ai e le HDMI le pasia o le tusi faamaonia talafeagai e faʻatagaina; ③ 90 ohm differential impedance e masani ona faʻaaogaina mo faailo USB; (4) Tasi-fa’amau 50 ohm impedance e masani ona faʻaaogaina mo se vaega o le faailo DDR. Talu ai o le tele o vaega o le DDR e faʻaaogaina le faʻaogaina o le faʻaogaina o le impedance design, o le mamanu e faʻavae i luga o le Demo board na tuʻuina atu e le kamupani fofo e fai ma faʻamatalaga, ma e le fautuaina lenei taʻiala. ⑤, tasi pito 75-ohm impedance e masani ona faʻaaogaina mo faʻaoga vitio analog ma gaioiga. O loʻo i ai le 75-ohm teteʻe e fetaui ma le eleele i luga o le mamanu matagaluega, o lea e le manaʻomia ai le faʻatinoina o le faʻaogaina o le faʻaogaina o mamanu i le PCB Layout, ae e tatau ona maitauina o le 75-ohm grounding resistance i le laina e tatau ona tuʻu latalata. i le pine fa’amau. Fa’aaoga masani PP.