联阳HighSpeedVGATripleDAC。TheIT6902isatriplehighspeed,digital-to-analogconverteronasinglemonolithicchip.Therearethreehighspeed,10-bit,videoD/Aconverterswithcomplementaryoutputs,astandardTTLinputinterface,andahighimpedance,analogoutputcurrentsource.3.3V/1.8Vpowersupplyandclockareallreq