Patent ID: 6501402
Filing Date: 2002-12-31
Classification: H03M

Abstract:
A digital-to-analogue converter, comprising:an array of current sources, each of said current sources having an output that is switchable onto one of first and second output terminals as a function of a digital input signal, wherein a first group of current source outputs are switched to the first output terminal regardless of being a most significant bits (MSB) or a least significant bits (LSB) current source and a second group of current source outputs are switched to the second output terminal regardless of being a MSB or LSB current source; and a calibration unit, wherein any of said current source outputs are also switchable to said calibration unit, wherein the current sources are calibrated cyclically during a calibration cycle, and wherein the current source outputs switched to the first and second output terminals are selected as a function of a point within the calibration cycle.