Showing papers by "Eddy So published in 1985"
TL;DR: In this article, a self-balancing dc comparator is used to establish currents proportional to a reference quantity, and the code weight of each bit is established through turns on a magnetic core rather than by a resistor ladder network.
Abstract: A current-comparator technique for obtaining a 20-bit digital-to-analog converter (DAC) is described. A self-balancing dc comparator is used to establish currents proportional to a reference quantity. The code weight of each input bit is established through turns on a magnetic core rather than by a resistor ladder network. The converter has a full-scale voltage output of 10 V, a linearity error of less than 1 ppm of full scale, and a settling time of approximately 6 ms.
2 citations