A digital to analog converter circuit includes a current supply for providing a plurality of output currents of substantially equal magnitudes, a subtractor circuit coupled with selective outputs of the current supply for producing a plurality of binary weighted output currents and a summing circuit which is responsive to a binary coded digital input signal for selectively summing the binary weighted output currents and the remaining equal magnitude currents to provide a representative analog output current. The converter circuit is suited to be operated from a single source of power supply and does not require resistor trimming.