精密仪表放大器OPA690

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1、OPA2613SBOS249D−JUNE2003−REVISEDAPRIL2004Dual,Wideband,HighOutputCurrent,OperationalAmplifierwithCurrentLimitFEATURESAPPLICATIONSDLOWINPUTNOISEVOLTAGE:1.8nV/√HzDxDSLDIFFERENTIALLINEDRIVERSDHIGHUNITY-GAINBANDWIDTH:230MHzD16-BITADCDRIVERDHIGHGAINBANDWIDTHPRODUCT:125MHzDLOWNOISEPLLINTEGRATORSDHI

2、GHOUTPUTCURRENT:350mADTRANSIMPEDANCEAMPLIFIERSDLOWINPUTOFFSETVOLTAGE:±0.2mVDPRECISIONBASEBANDI/QAMPLIFIERSDFLEXIBLESUPPLYRANGE:DACTIVEFILTERSSingle+5Vto+12VOperationDTS613IMPROVEDREPLACEMENTDual±2.5Vto±6VOperationDLOWSUPPLYCURRENT:6.0mA/chOPA2613RELATEDPRODUCTSDESCRIPTIONFEATURESSINGLESDUALST

3、RIPLESTheOPA2613offersverylow1.8nV√HzinputnoiseinaHighGainStableOPA2614wideband,unity-gainstable,voltage-feedbackHighSlewRateVFBOPA690OPA2690OPA3690architecture.IntendedforxDSLdriverapplications,theR/RInput/OutputVFBOPA353OPA2353OPA2613alsosupportsthislowinputnoisewithCurrent-FeedbackOPA69

4、1OPA2691OPA3691exceptionallylowharmonicdistortion,particularlyindifferentialconfigurations.AdequateoutputcurrentisCurrent-FeedbackOPA2677providedtodrivethepotentiallyheavyloadofaOPA2613twisted-pairline.Harmonicdistortionfora2VPPdifferentialoutputoperatingfrom+5Vto+12Vsuppliesis≤−95dBcRn:1Ot

5、hrough1MHzinputfrequencies.Operatingonalow6.0mA/chsupplycurrent,theOPA2613cansatisfymostxDSLdriverrequirementsoverawiderangeofpossiblexDSLDriversupplyvoltagefromasingle+5condition,to±5V,onupROtoasingle+12Vdesign.General-purposeapplicationsonasingle+5Vsupplywillbenefitfromthehighinputandoutpu

6、tvoltageswingavailableonthisreducedsupplyvoltage.Low-cost500Ω1kΩ500ΩprecisionintegratorsforPLLswillalsobenefitfromthelowvoltagenoiseandoffsetvoltage.BasebandI/Qreceiverchannelscanachievealmostperfectchannelmatchwithnoiseanddistortiontosupportsignalsthrough5MHzwithOPA2822>14-bitdynamicrange.50

7、0Ω1kΩVeryhighlinepowerrequirementscanbesupportedusingthethermally-enhancedheatslugpackage.SolderedintoxDSLReceiverastandardprintedcircuitboard,thisheatslugreducesthethermalimpedancejunction-to-ambientto<50°C/W.OPA2822500ΩPleasebeawarethatanim