Patent ID: 6545623
Filing Date: 2003-04-08
Classification: H03M

Abstract:
In a system including an analog-to-digital converter subsystem (ADC) and a digital-to-analog converter subsystem (DAC), wherein said ADC samples an input signal at each of a sequence of sample times and provides a sequence of digital outputs representing the magnitude of said sampled input signal, and wherein said DAC includes a plurality of elements each connectable in a plurality of different ways in accordance with said digital outputs so as to contribute a portion of an analog output signal corresponding to said digital output, the magnitude of said portion being determined by a way said element is connected, a method for shuffling said elements comprising the steps of:generating a plurality of coded analog signals based on said input voltage, each such coded analog signal being above or below a predetermined threshold so as to correspond to a way one of said elements is connected; providing a predetermined sequence of control codes; shuffling said coded analog signals in accordance with said sequence of control codes; latching said shuffled coded analog signals as digital values; and connecting said plurality of elements in ways determined in accordance with said shuffled codes.