双向电流检测与单输出

摘要：电池供电设备经常需要监视充电和放电电流。双电流检测放大器和差动放大器相结合，以产生一个单一的输出电压指示电池电流的大小和方向。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSAUTOMOTIVEBATTERYMANAGEMENTKeywords:bidirectional,currentsenseamp,currentmonitor,battery,chargecurrent,dischargecurrent,Mar25,2003amplifier,amplifiers,ampsAPPLICATIONNOTE1949Bi-directionalCurrent-SensewithSingleOutputAbstract:Batteryoperateddevicesoftenneedtomonitorbothchargeanddischargecurrents.Adualcurrent-senseamplifieranddifferentialamplifierarecombinedtoproduceasingleoutputvoltagethatindicatesmagnitudeanddirectionofbatterycurrent.Systemssuchaslaptopcomputersandotherdevicesthathaveinternalchargecircuitryrequireaprecisebi-directionalcurrent-senseamplifiertomonitoraccuratelythebattery'scurrentregardlessofpolarity.TheMA