Patent ID: 11923866
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The digital-to-analog conversion method in claim 9, wherein the input digital codeword further comprises a plurality of binary codes to control a plurality of binary-control current sources of the current sources, the digital-to-analog conversion method further comprises:
selecting a first group and a second group from the groups by the calibration parameter calculating circuit, wherein the thermometer codes corresponding to the first group and the second group make the operation state of each of the thermometer-control current sources completely opposite; and
averaging the offset amount of each of the binary-control current sources that corresponds to the first current output state in the first group and the second group by the calibration parameter calculating circuit to generate the current offset of one of the binary-control current sources.