Measuring the Linearity of Differential-Output, Current-Mode Digital-to-Analog Converters (DACs)

Abstract: Measuring the linearity of digital-to-analog converters (DACs) is not a trivial task. There are many potential sources of error, including thermal effects, ground loops, and instrument accuracy. Additionally, a complete linearity measurement of DACs with digital resolution in excess of 10 bits can be time consuming with bench instruments. This application note details how to perform these tests quickly with minimal errors.