Current-summing digital-to-analog converter with binarily weighted current sources

摘要: A digital-to-analog converter has a bias block that provides first and second voltage outputs, bit cell having switch for selectively connecting either or summing node to current flow path depending upon the state of binary input signal. An output bipolar transistor source are connected in series between supply reference potential. MOS is with its gate transistor. base compensating amplifier. resistor When plurality stages provided, each cells sized according position associated order. The resistors may be as power 2 order, or, except most significant times larger than cell, equally adjacent an R-2R network.