The R2A20164 is an integrated circuit semiconductor of CMOS structure with 4 channels of built in D/A unnecessary and enabling configuration of a system with few component parts Serial data transfer type input can easily be used through a combination of three lines: DI, CLK, and LD. Outputs incorporate buffer op-amps that have a drive capacity of 1 mA or above for both sink source, and can operate over the entire voltage range from almost ground to Vcc ( 0 to 5V ), making peripheral elements unnecessary and enabling configuration of a system with few component parts. Very small QFN package is added to lineup. It is suitable for a small mounting and reduces the mounting area.