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從東(dong)沃GPS接口浪(lang)涌(yong)(yong)靜(jing)電(dian)(dian)保護(hu)(hu)方案設計圖可(ke)知(zhi),東(dong)沃電(dian)(dian)子技術從兩個方面(mian)進(jin)行浪(lang)涌(yong)(yong)靜(jing)電(dian)(dian)防(fang)(fang)(fang)護(hu)(hu):一(yi)個是對(dui)內饋直流(liu)(liu)電(dian)(dian)源進(jin)行浪(lang)涌(yong)(yong)防(fang)(fang)(fang)護(hu)(hu),另(ling)一(yi)個是對(dui)射頻(pin)信號進(jin)行防(fang)(fang)(fang)護(hu)(hu)。一(yi)級電(dian)(dian)源防(fang)(fang)(fang)護(hu)(hu),東(dong)沃技術推薦選(xuan)用(yong)(yong)半導體放電(dian)(dian)管(guan)P0080SC,用(yong)(yong)于吸收雷(lei)擊或(huo)大浪(lang)涌(yong)(yong)電(dian)(dian)流(liu)(liu)。饋電(dian)(dian)部分防(fang)(fang)(fang)護(hu)(hu)選(xuan)用(yong)(yong)單向瞬態抑制TVS二(er)(er)極(ji)(ji)管(guan)SMBJ6.0A和肖特基二(er)(er)極(ji)(ji)管(guan)B0520W,可(ke)有效保護(hu)(hu)后端(duan)LDO芯(xin)片免(mian)受(shou)浪(lang)涌(yong)(yong)的沖擊。二(er)(er)級信號接口選(xuan)用(yong)(yong)東(dong)沃推出的ESD靜(jing)電(dian)(dian)保護(hu)(hu)二(er)(er)極(ji)(ji)管(guan)DW05DLC-B-S,工作電(dian)(dian)壓5V、低(di)鉗位電(dian)(dian)壓18.3V、低(di)漏電(dian)(dian)流(liu)(liu)1uA。
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