DIGITAL TO ANALOG CONVERTER WITH THERMOMETER CODING AND METHODS FOR USE THEREWITH

摘要

A digital to analog converter (DAC) includes a thermometer coder that processes a digital input based on a thermometer coding, and generates a plurality of micro-current source inputs and a plurality of micro-current source analog controls. A plurality of micro-current sources generate a corresponding plurality of micro-current source outputs in response to the plurality of micro-current source inputs, wherein first selected ones of the plurality of micro-current sources are powered-off in response to the plurality of micro-current source analog controls. A summing circuit generates an analog output based on a sum of the corresponding plurality of micro-current source outputs.

主权项

1. A digital to analog converter (DAC) comprising:
a thermometer coder configured to process a digital input based on a thermometer coding to generate a plurality of micro-current source inputs and a plurality of micro-current source analog controls; a plurality of micro-current sources, coupled to the thermometer coder, configured to generate a corresponding plurality of micro-current source outputs in response to the plurality of micro-current source inputs, wherein first selected ones of the plurality of micro-current sources are powered-off in response to the plurality of micro-current source analog controls; and a summing circuit, coupled to the plurality of micro-current sources, configured to generate an analog output based a sum of the corresponding plurality of micro-current source outputs.