Localized dynamic element matching and dynamic noise scaling in digital-to-analog converters (DACs)

摘要

Methods and systems are provided for controlling operations of digital-to-analog converters (DACs), particularly ones comprising multiple DAC elements. In particular, a plurality of DAC elements in a digital-to-analog converter (DAC) may be controlled during digital-to-analog conversions, with the controlling comprising use of a switching arrangement that comprises one or more switching elements configured for controlling switching of each of the plurality of DAC elements. The controlling may comprise forcing one or more of the plurality of DAC elements in the DAC to not switch during the digital-to-analog conversions. Further, the remaining DAC elements may be scrambled. The controlling of the plurality of DAC elements in the DAC may be based on analysis of an input to the DAC that is being converted. The analysis may comprise determining when the input is backed off from full-scale. A switching sequence may be applied, via each of the one or more switching elements.

主权项

1. A method, comprising:
in a digital-to-analog converter (DAC):
controlling a plurality of DAC elements in said DAC during digital-to-analog conversion of an input to said DAC;wherein said controlling comprises using a switching arrangement that comprises one or more switching elements configured for controlling switching each of said plurality of DAC elements on or off.