東沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子（DOWOSEMI）供應的雙(shuang)電(dian)(dian)(dian)(dian)(dian)壓(ya)比(bi)較(jiao)(jiao)器(qi)(qi)LM393是由(you)兩個(ge)獨(du)立、精確的電(dian)(dian)(dian)(dian)(dian)壓(ya)比(bi)較(jiao)(jiao)器(qi)(qi)組成，其(qi)失調電(dian)(dian)(dian)(dian)(dian)壓(ya)不超過2.0mV，可在單電(dian)(dian)(dian)(dian)(dian)源(yuan)下或雙(shuang)電(dian)(dian)(dian)(dian)(dian)源(yuan)下工(gong)作，并且其(qi)電(dian)(dian)(dian)(dian)(dian)流大小(xiao)不受(shou)電(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)壓(ya)幅度(du)大小(xiao)影響(xiang)。LM393比(bi)較(jiao)(jiao)器(qi)(qi)有一個(ge)獨(du)特的性能，就是即使在單電(dian)(dian)(dian)(dian)(dian)源(yuan)下工(gong)作時，其(qi)輸入共(gong)模電(dian)(dian)(dian)(dian)(dian)壓(ya)范圍(wei)也能達(da)到零電(dian)(dian)(dian)(dian)(dian)平。雙(shuang)電(dian)(dian)(dian)(dian)(dian)壓(ya)比(bi)較(jiao)(jiao)器(qi)(qi)LM393芯片采用SOP-8封裝形式，主要(yao)用于消費類(lei)和工(gong)業類(lei)電(dian)(dian)(dian)(dian)(dian)子產品中。常有客戶向東沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子咨詢LM393這個(ge)雙(shuang)電(dian)(dian)(dian)(dian)(dian)壓(ya)比(bi)較(jiao)(jiao)器(qi)(qi)，接下來，東沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子從LM393特點(dian)、引腳、參數、使用說明(ming)和應用詳細解(jie)說，希望能夠幫(bang)助到迷茫中的您！

LM393雙電壓比較器特點

LM393雙電壓比較器引腳

LM393雙(shuang)電壓比較器引腳圖如下：

LM393雙電壓比較器參數

LM393雙電壓比較器參數詳情如下圖：

LM393雙電壓比較器使用說明

LM393是高增益、寬(kuan)頻帶(dai)器(qi)件，像大多(duo)數比較(jiao)器(qi)一(yi)樣，如果(guo)輸(shu)出(chu)(chu)端到(dao)輸(shu)入(ru)(ru)端有寄生(sheng)(sheng)電容(rong)而產(chan)生(sheng)(sheng)耦(ou)合，則很容(rong)易產(chan)生(sheng)(sheng)振蕩(dang)(dang)(dang)這種現象僅僅出(chu)(chu)現在當(dang)(dang)比較(jiao)器(qi)改變狀態時(shi)，輸(shu)出(chu)(chu)電壓過(guo)渡(du)的(de)間(jian)隙。電源加旁路濾(lv)波并(bing)(bing)不(bu)能解決這個問(wen)題(ti)，標準PC板的(de)設計對減小(xiao)輸(shu)入(ru)(ru)一(yi)輸(shu)出(chu)(chu)寄生(sheng)(sheng)電容(rong)耦(ou)合是有助的(de)。減小(xiao)輸(shu)入(ru)(ru)電阻至小(xiao)于(yu)10KΩ將減小(xiao)反饋信號，而且增加甚至很小(xiao)的(de)正反饋量(滯(zhi)回(hui)1.0~10mV)能導致快速轉(zhuan)換，使得不(bu)可能產(chan)生(sheng)(sheng)由于(yu)寄生(sheng)(sheng)電容(rong)引(yin)起的(de)振蕩(dang)(dang)(dang)。除非利用(yong)滯(zhi)后，否則直接(jie)插入(ru)(ru)IC并(bing)(bing)在引(yin)腳上加上電阻將引(yin)起輸(shu)入(ru)(ru)-輸(shu)出(chu)(chu)在很短的(de)轉(zhuan)換周期內振蕩(dang)(dang)(dang)，如果(guo)輸(shu)入(ru)(ru)信號是脈沖波形，并(bing)(bing)且上升和(he)下(xia)降時(shi)間(jian)相當(dang)(dang)快，則滯(zhi)回(hui)將不(bu)需(xu)要。比較(jiao)器(qi)的(de)所有沒有用(yong)的(de)引(yin)腳必須接(jie)地(di)。

LM393偏置網絡確立了其靜態電(dian)(dian)流與(yu)電(dian)(dian)源電(dian)(dian)壓范圍20~30V無(wu)關。通常電(dian)(dian)源不需要(yao)加旁路電(dian)(dian)容,差分輸(shu)入(ru)電(dian)(dian)壓可(ke)以大于VCC并不損(sun)壞器件。保護部分必須(xu)能阻止輸(shu)入(ru)電(dian)(dian)壓向負端超(chao)過-0.3V。

LM393 的(de)(de)輸(shu)出(chu)(chu)(chu)(chu)部分是集(ji)電(dian)(dian)(dian)(dian)極(ji)開(kai)(kai)路，發射極(ji)接地(di)的(de)(de)NPN輸(shu)出(chu)(chu)(chu)(chu)晶體管(guan)，可(ke)以用多集(ji)電(dian)(dian)(dian)(dian)極(ji)輸(shu)出(chu)(chu)(chu)(chu)提供或(huo)功能。輸(shu)出(chu)(chu)(chu)(chu)負(fu)(fu)載電(dian)(dian)(dian)(dian)阻(zu)能銜接在可(ke)允(yun)許電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓范(fan)圍內的(de)(de)任何電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓上，不受 VCC端(duan)電(dian)(dian)(dian)(dian)壓值的(de)(de)限制。此(ci)輸(shu)出(chu)(chu)(chu)(chu)能作為一個簡單(dan)的(de)(de)對地(di)SPS開(kai)(kai)路(當(dang)不用負(fu)(fu)載電(dian)(dian)(dian)(dian)阻(zu)沒被運用)，輸(shu)出(chu)(chu)(chu)(chu)部分的(de)(de)陷電(dian)(dian)(dian)(dian)流被可(ke)能得到的(de)(de)驅(qu)動(dong)和(he)(he)器(qi)件(jian)的(de)(de)B值所限制。當(dang)達到極(ji)限電(dian)(dian)(dian)(dian)流(16mA)時，輸(shu)出(chu)(chu)(chu)(chu)晶體管(guan)將退出(chu)(chu)(chu)(chu)而且輸(shu)出(chu)(chu)(chu)(chu)電(dian)(dian)(dian)(dian)壓將很快上升。輸(shu)出(chu)(chu)(chu)(chu)飽(bao)和(he)(he)電(dian)(dian)(dian)(dian)壓被輸(shu)出(chu)(chu)(chu)(chu)晶體管(guan)大約(yue)60Ω的(de)(de)γSAT限制。當(dang)負(fu)(fu)載電(dian)(dian)(dian)(dian)流很小時，輸(shu)出(chu)(chu)(chu)(chu)晶體管(guan)的(de)(de)低(di)失(shi)調(diao)電(dian)(dian)(dian)(dian)壓(約(yue)1.0mV)允(yun)許輸(shu)出(chu)(chu)(chu)(chu)箱(xiang)位在零(ling)電(dian)(dian)(dian)(dian)平。

LM393雙電壓比較器典型應用

關于雙電壓比較器LM393相關的知識就分享(xiang)到(dao)這兒了，想了解LM393廠家(jia)、價格、現貨、交期(qi)等方面信(xin)息，可直接咨詢東沃電子，可靠穩(wen)定，廠家(jia)價格、閃電供貨：136 7581 6901（微信(xin)同號）朱經理