Digital analog converter and method for calibrating sources thereof
AssigneeElectronics and Telecommunications Research Institute
InventorsJang Hong Choi, Hyun Kyu Yu
Life of this patent
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Abstract
Provided is a digital analog converter that output currents having different magnitudes for a digital input value according to a mapping table. The digital analog converter includes: a plurality of current sources; and a calibration unit configured to sort index values for identifying the plurality of current sources according to current magnitudes of the current sources, couple each two current sources which are symmetrical left and right about the center of the sorted index values, and map the current source pairs into a mapping table.
Claims8
A digital analog converter that output currents having different magnitudes for a digital input value according to a mapping table, comprising:
- a plurality of current sources;
- and
- a calibration unit configured to sort index values for identifying the plurality of current sources according to current magnitudes of the current sources, couple each two current sources which are symmetrical left and right about the center of the sorted index values, and map the current source pairs into a mapping table.
A method for calibrating current sources of a digital analog converter, comprising:
- sorting index values for identifying a plurality of current sources according to current magnitudes of the current sources;
- and
- coupling each two current sources which are symmetrical left and right about the center of the sorted index values, and mapping the current source pairs into a mapping table.
Dependencies are inferred from the claim text.