技術(shù)沙龍-密碼技術(shù)與數(shù)據(jù)安全什么是數(shù)字化轉(zhuǎn)型？《電子技術(shù)應(yīng)用》特約專欄征稿歡迎查看AET新能源汽車電子專題

帶偏流補(bǔ)償?shù)膶拵Х糯箅娐?

2017-10-10 11:29

關(guān)鍵詞：放大電路電路帶偏流補(bǔ)償

帶偏流補(bǔ)償?shù)膶拵Х糯箅娐? src="http://files.chinaaet.com/dianlutu/90/490-1.jpg" style="cursor:hand" border=0>

圖(a)所示電路與一般反相放大電路的不同點僅在于反饋電阻輸入端點與反相輸入端之間串接了一個100kΩ的電位器，用于對直流偏流進(jìn)行補(bǔ)償。調(diào)整電位器Rp，使當(dāng)Vi=0V時，Vo=0。在補(bǔ)償端引腳1與10之間接相位補(bǔ)償電容C1(90pF)，引腳5到地的濾波電容C2也為90pF。該電路在圖示參數(shù)下的電壓放大倍數(shù)為：Av=-10，其電壓轉(zhuǎn)換速度大于70v／μs，半功率帶寬可達(dá)400kHz以上，其增益帶寬之積約為30MHz。采用10引腳的金屬圓形封裝的LH0003工作溫度為0～85℃，存儲溫度為-65～150℃。當(dāng)采用LH0003芯片時，其工作溫度為-55～125℃，存儲溫度為-65～150℃。圖(b)為LH0003/LH0003C集成芯片管腳排列圖。

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