A high-accuracy 9-bit digital-to-analog converter operating at 12 mc

This paper describes a 9-bit digital-to-analog converter operating at a speed of over 12 mc (megacycles). This converter has achieved signal-to-noise ratios greater than 53 db (decibels) for a full-range sinusoidal signal, which is only 3 db less than theoretical 9-bit performance. The techniques used are: extremely accurate components with wide frequency response used in an appropriate weighting network; fast digital circuitry producing low noise waveforms: and a resampling technique.