标签: tc7106a

TheTC7106A/71063-1/2digitanalog-to-digital(ADC)converterswithliquidcrystaldisplaydrivecanbeeasilypoweredfrom±5Vpowersupplies.Lowcostvoltageregulators,suchastheTC55(+5V)andTC59(–5V),powertheTC7106A/7106inFigure1.Analogcom-mon,internallyreferencedto3Vbelowthepositivesupplypotential,isusedtosupplytheconverterreference.Ifonly+5Visavailable,thelowcostTC7660DC-to-DCconvertereasilygeneratesthe–5Vsupply,asshowninFigure2.ATC7107A/7107LEDdisplayconvertercanalsobepoweredbyaTC7660.MAN783±5VPowerSupplyOperationwithTC7106A/7107AAnexternalvoltagereferencereplacestheinternalref-Author:MicrochipTechnologyInc.erenceinFigure3.ChiptemperaturevariationscausedbychangingLEDdisplaydrivecurrentcancausefull-INTRODUCTIONscaledriftiftheinternalreferencedoesnothavealowtemperaturecoefficient.In……