I ke ao uila o kēia lā, ʻo ka wikiwiki ka mea mua a me nā mea nui e hoʻomaikaʻi ai i ka hana huahana holoʻokoʻa. No laila, me ka hoʻonui i ka wikiwiki o ka hōʻailona, ​​ua hoʻopiha ʻia kahi nui o nā hoʻolālā uila me nā interface wikiwiki, a ʻo ka hoʻonui ʻana o ka wikiwiki o ka hōʻailona PCB hoʻonohonoho a me nā uea i kumu nui o ka hana ʻōnaehana holoʻokoʻa. The increasing abundance of electronic innovations has led to increased demand for high-speed PCB manufacturing and assembly technologies best suited to complex critical PCB requirements, including the need to reduce onboard noise on PCB. ʻO ka walaʻau ma ka papa kaapuni i paʻi ʻia ka mea nui e hoʻololi i ka hana o ka ʻōnaehana holoʻokoʻa. Kuhi kēia blog i nā ala a me nā ala e hōʻemi ai i ka walaʻau ma ka PCB wikiwiki wikiwiki.

Hoʻolālā nā hoʻolālā PCB e hōʻoia i ka hoʻomaikaʻi hou ʻana i ka pae haʻahaʻa a me ka walaʻau ma ka papa i ka PCB. ʻO ka hoʻolālā PCB kahi pae koʻikoʻi nui i ka loaʻa ʻana o ka ikaika, noiseless, nā lawelawe hui PCB kiʻekiʻe kiʻekiʻe, a ua lilo ʻo PCB hoʻolālā i mea nui. I kēia hopena, nā mea nui e pili ana i ka hoʻolālā kaapuni kūpono, nā pili pili pili pili pili, nā mea parasite, ka decoupling a me nā ʻenehana kahua no ka hoʻolālā PCB maikaʻi. ʻO ka mea mua ke ʻano maʻalahi a me ke ʻano o ka hoʻopili ʻana – nā puka lou o ka honua a me ka walaʻau o ka honua, ka capacitance ʻauana, ka impedance kiʻekiʻe, nā laina hoʻoili a me nā uea paʻa. No nā koi pinepine pinepine o ka wikiwiki wikiwiki i ka pōʻaiapuni,

Nā hana hoʻolālā no ka hoʻopau ʻana i ka walaʻau ma ka PCB wikiwiki wikiwiki

Hiki i ka walaʻau i kahi PCB ke hoʻololi i ka hana PCB ma muli o nā fluctuations i ka pulse voltage a me ke ʻano o kēia manawa. Read through some precautions to avoid errors that may help enhance functionality and prevent noise from high-speed PCB.

L Reduce crosstalk

Hoʻopili hou ʻia ʻo Crosstalk a me ka hoʻopili electromagnetic ma waena o nā kaula, nā kaula, nā hui uwea, a me nā mea e pili ana i ka hoʻokaʻawale kahua electromagnetic. Pili ka nui o Crosstalk i nā ʻenehana hoʻokele. ʻAʻole hiki ke loaʻa ʻo Crosstalk ke hoʻoneʻe ʻia nā kaula i kēlā me kēia ʻaoʻao. Inā kūlike nā kaula me kekahi, hiki paha i ka crosstalk ke mālama ʻole ʻia nā ʻāpana. ʻO nā ala ʻē aʻe e hōʻalo ai i crosstalk e hoʻohaʻahaʻa i ke kiʻekiʻe dielectric a hoʻonui i ka spacing ma waena o nā uea.

L Strong signal power integrity

Pono e noʻonoʻo pono nā loea hoʻolālā PCB i ka hōʻailona a me ka pono o ka hana pono a me nā hiki analog o nā hoʻolālā PCB wikiwiki. ʻO kekahi o nā manaʻo nui e hoʻolālā i ka wikiwiki SI ʻo ke koho pololei ʻana o nā laina hoʻoili hoʻolālā PCB e pili ana i ka wikiwiki o ka hōʻailona, ​​ka mea hoʻokele IC, a me nā ʻano hoʻolālā ʻē aʻe e kōkua i ka pale ʻana i ka walaʻau PCB. Wikiwiki ka wikiwiki wikiwiki. ʻO ka pono pono (PI) kahi ʻāpana nui o ka kaola i koi ʻia e hoʻokō i nā hoʻolālā PCB wikiwiki e hoʻoliʻiliʻi i ka walaʻau a mālama i kahi pae paʻa paʻa paʻa ma ka papa o ka ʻāpana.

L Prevent cold welding spots

Hiki i ke kaʻina kuʻina hewa ʻole ke hopena i nā kiko anuanu. Hiki i nā hui anuanu ke hana i nā pilikia e like me ka wehe ʻole maʻamau, ka walaʻau kūpaʻa a pēlā aku. Maikaʻi loa! I mea e pale ai i kēlā mau pilikia, e hoʻāla pono i ka hao ma ke ana wela kūpono. Pono e kau i ka piko o ka piko hao ma ka hui solder e wela pono ma mua o ka hoʻopili ʻana i ka solder. E ʻike ʻoe i ka hoʻoheheʻe ʻana i ke ana wela kūpono; Uhi uhi ka solder i ka ami. ʻO nā ala ʻē aʻe e hoʻomaʻalahi ai i ka hoʻopili ʻana e hoʻohana i ka flx.

L Reduce PCB radiation to achieve low noise PCB design

ʻO ka hoʻonohonoho lamineka ʻia o nā hui laina pili like ke koho pono kaapuni koho e hōʻalo ai i ka walaʻau ma ka PCB. Other prerequisites for achieving a low-noise PCB design and reducing PCB emission include a low chance of splitting, the addition of series terminal resistors, the use of decoupling capacitors, the separation of analog and digital ground layers, and the isolation of I/O areas and shutting off the board or the signal on the board are well suited to the needs of low-noise high-speed PCB.

Ke hoʻokō piha nei i nā ʻenehana i luna aʻe nei a me ka hoʻomanaʻo ʻana i nā koi pilikino hoʻolālā kikoʻī o kēlā me kēia papahana PCB, maopopo ʻole ka hoʻolālā ʻana i kahi PCB noiseless. In order to have sufficient design choices to obtain noiseless PCB in the EMS specification, that is why we have proposed a variety of methods to avoid on-board noise on high-speed PCB.