Method of generating a switching sequence for an unary array of conducting branches and a relative thermometrically decoded digital-to-analog converter

摘要

A method for determining switching sequences of two-dimensional unary arrays of conducting branches of thermometrically decoded D/A converters, in a way that will ensure that the relative INL error function be contained between pre-established symmetrical upper and lower bound functions, has been found. When these upper and lower bound functions are constant, the obtained switching sequence compensates both the linear and the quadratic component of the error distribution and therefore is affected by a very small absolute INL error, which depends essentially on the random component of the error distribution.;This method may be easily implemented by a computer program and allows the realization of thermometrically decoded D/A converters affected by a known limited INL error function.