Image calibration for time-interleaved digital-to-analog converter

An interleaved digital-to-analog converter (DAC) system may include a first sub-DAC and a second sub-DAC and may be configured to provide both a converter output signal and a calibration output signal. The converter output signal may be provided by adding the first sub-DAC output signal and the seco...

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Bibliographische Detailangaben
Hauptverfasser: Singh, Jaswinder, Yang, Siyu, Sedighi, Behnam, Mehdizad Taleie, Shahin, Ji, Honghao, Weil, Andrew, Swaminathan, Ashok, Liu, Xilin, Rashidi, Negar, Kanagaraj, Sudharsan, Seo, Dongwon
Format: Patent
Sprache:eng
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Zusammenfassung:An interleaved digital-to-analog converter (DAC) system may include a first sub-DAC and a second sub-DAC and may be configured to provide both a converter output signal and a calibration output signal. The converter output signal may be provided by adding the first sub-DAC output signal and the second sub-DAC output signal. The calibration output signal may be provided by subtracting one of the first and second sub-DAC output signals from the other. The calibration output signal may be used as feedback to adjust the phase of one of the sub-DACs relative to the other, to promote phase matching their output signals.