AD694

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694

4-20mA單芯片電流發(fā)射器; ? 輸出范圍：4-20 mA、0-20 mA \n\n? 預校準輸入范圍：0V至2V、0V至10V \n\n? 精密基準電壓可編程至2.000 V或10.000 V \n\n? 單電源或雙電源供電\n\n? 寬電源電壓范圍：4.5V至36V;

AD694是一款單芯片電流發(fā)射器，可接受高電平信號輸入以驅(qū)動標準4-20 mA電流環(huán)路，從而控制過程控制中常用的閥門、執(zhí)行器和其它設備。輸入信號由一個輸入放大器緩沖，可以利用該放大器調(diào)整輸入信號或者緩沖一個電流模式DAC的輸出。通過簡單的引腳綁定可以選擇預校準的0 V至2 V或0 V至10 V輸入范圍；其它范圍可以通過外部電阻進行設置。\n\n 輸出級電源電壓可以達到VS的2 V范圍內(nèi)；采用雙電源工作時，其特殊設計允許輸出電壓低于共模電壓。4-20 mA環(huán)路開路或輸出級不符合要求時會發(fā)出報警。\n\n 經(jīng)過有源激光調(diào)整的薄膜電阻使AD694具備高精度特性，無需執(zhí)行額外調(diào)整和校準。可以增加一個外部調(diào)整管與AD694配合使用，以降低功耗負載，擴大工作溫度范圍。\n\n AD694非常適合要求以抗擾方式傳輸4-20 mA信號以操作閥門、執(zhí)行器和其它控制設備的系統(tǒng)，以及傳輸壓力、溫度或流量等過程參數(shù)的應用。建議用它代替工業(yè)過程控制、工廠自動化和系統(tǒng)監(jiān)控等各種應用中的分立設計。\n\n AD694采用16引腳密封cerdip和塑封SOIC封裝產(chǎn)品的額定溫度范圍為-40°C至+85°C工業(yè)溫度溫度范圍，采用16引腳塑封DIP封裝產(chǎn)品為0°C至+70°C溫度范圍。\n\n

AD694AQ

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694AR

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694ARZ

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694BQ

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694BR

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan

AD694BRZ

4??0 mA Transmitter

PRODUCTDESCRIPTION TheAD694isamonolithiccurrenttransmitterthatacceptshighlevelsignalinputstodriveastandard4–20mAcurrentloopforthecontrolofvalves,actuators,andotherdevicescommonlyusedinprocesscontrol.Theinputsignalisbufferedbyaninputamplifierthatcan