A complete monolithic 10-b D/A converter

A monolithic 10-b plus sign D/A converter has been developed that incorporates all necessary circuit functions including voltage reference and internally compensated high-speed output op amp in a single 82/spl times/148 mil chip. A unique logic switch and current source configuration achieves 0.05 percent nonlinearity with /spl plusmn/10 V compliance current output option as well as true or complementary binary coding. The design constraints and area requirements for scaling of current source emitter areas are reduced by using a new active current-splitting technique. The circuit features a 1.5 /spl mu/s settling time voltage output and sign-magnitude coding.