VGA OUT PCB Design Ukucatshangelwa

I-VGA (I-Video Graphics Array) okungukuthi, uhlu lwezithombe zevidiyo, ezinokulungiswa okuphezulu, izinga lokuboniswa okusheshayo, imibala ecebile, njll. I-VGA interface ayisona nje isixhumi esibonakalayo esijwayelekile samadivayisi wokubonisa we-CRT, kodwa futhi isixhumi esibonakalayo esijwayelekile samadivayisi e-LcD liquid crystal display. , enezinhlobonhlobo zezinhlelo zokusebenza.

VGA OUT PCB design ukucatshangelwa

1. Isakhiwo sonke, isihlalo se-VGA esiseduze ngangokunokwenzeka ku-chip yokuguqula ebekwe, zama ukufushanisa ukuqondanisa kwesignali ye-analog ye-VGA.

2. Ama-decoupling capacitor we-conversion chip power supply adinga ukubekwa eduze kakhulu nezikhonkwane zokunikezwa kwamandla kwe-chip yokuguqula.

3. I-VGA_R/G/B idinga ukuxhuma i-75ohm yokudonsa phansi, ukunemba okungu-1%;I-resistor kufanele ibekwe eduze kwe-chip.

4. Ububanzi bomugqa wokuqondanisa we-VGA_R / G/B njengogqinsi ngangokunokwenzeka, kutuswa ukuthi kube ngaphezu kuka-12mil, futhi umehluko wobude phakathi kwawo akumele udlule u-200mil.

5. Izidingo zesignali ye-VGA_R / G/B kulo lonke ukucubungula kwephakeji elihlukile lomhlabathi, isikhawu sokuqondanisa kwepakethe yomhlabathi esingu-300mil noma ngaphansi kufanele sibe nomhlabathi phezu komgodi.

6. Isignali ye-VGA_R / G / B eseduze nongqimba kufanele kube indiza ephansi, hhayi indiza yamandla.

7. Izimpawu ze-VGA_R/G/B zikude ne-LCD, i-DRAM kanye neminye imigqa yesignali yesivinini esikhulu, enqatshelwe emigqeni yesignali yesivinini esiphezulu eseduze nokuqondisa kongqimba;kuvinjelwe emigqeni yesignali yesivinini esikhulu eduze kwembobo yongqimba;ukuqondanisa akudluli endaweni ye-inductive;kude namasiginali we-RF namadivayisi;

8. Isihlungi se-VGA_HSYNC/VSYNC RC kufanele sibekwe eduze nesihlalo se-VGA, ukuqondanisa akumele kudlule u-6 Intshi.

9. Isihlalo se-VGA zonke izimpawu ze-TVS tube kufanele ibekwe eduze ngangokunokwenzeka esihlalweni sokuxhuma, i-topology yesiginali: Isihlalo se-VGA → TVS → iphinikhodi;Isenzakalo se-ESD, i-ESD yamanje kufanele iqale idlule ekuncipheni idivayisi ye-TVS;Ukuqondanisa kwedivayisi ye-TVS akunaso isiphunzi esisele (Stub);Izikhonkwane zomhlabathi ze-TVS zinconywa ukuthi zizame ukwandisa umhlabathi phezu komgodi, okungenani ukuqinisekisa ukuthi ezimbili ezingu-0.4 * 0.2mm phezu komgodi, ukuqinisa amandla okukhipha i-electrostatic.Qinisa amandla okukhipha i-electrostatic.

I-Zhejiang NeoDen Technology Co., LTD., eyasungulwa ngo-2010, ingumkhiqizi ochwepheshe okhethekile emshinini wokukhetha nendawo we-SMT, ihhavini eligeleza kabusha, umshini wokuphrinta we-stencil, ulayini wokukhiqiza we-SMT neminye Imikhiqizo ye-SMT.Sineqembu lethu le-R & D kanye nemboni yethu, sisebenzisa i-R&D yethu ecebile enokuhlangenwe nakho, ukukhiqizwa okuqeqeshwe kahle, sazuza idumela elihle kumakhasimende omhlaba wonke.

Sikholelwa ukuthi abantu abakhulu nozakwethu benza i-NeoDen inkampani enhle futhi ukuzibophezela kwethu Ekusunguleni, Ukuhlukahluka kanye Nokusimama kuqinisekisa ukuthi i-SMT automation ifinyeleleka kuwo wonke umuntu wokuzilibazisa kuyo yonke indawo.