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公开(公告)号：US09621177B1
公开(公告)日：2017-04-11
申请号：US15152384
申请日：2016-05-11
发明人： Zhang Jun , Xuan Wang , Dongyu Ou , Elliott Zhang , Echo Cao
CPC分类号： H03M1/1033 , H03M1/00 , H03M1/12 , H03M1/685 , H03M1/747
摘要： Methods, apparatus and articles of manufacture (e.g., physical storage media) to calibrate interpolating string digital-to-analog converters are disclosed. Example methods disclosed herein to calibrate a digital-to-analog converter (DAC) include determining a first calibration codeword based on a first nonlinearity error value measured at an output of the DAC when a most-significant-bit (MSB) portion of an input codeword is applied to an input of the DAC. Such disclosed example methods also include determining a second calibration codeword based on a second measured nonlinearity error value measured at the output of the DAC when a least-significant-bit (LSB) portion of the input codeword is applied to the input of the DAC. Such disclosed example methods further include combining the first calibration codeword and the second calibration codeword to determine a third calibration codeword to be accessed by the DAC to calibrate the output of the DAC when the input codeword is applied to the DAC.
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公开(公告)号：US09813074B2
公开(公告)日：2017-11-07
申请号：US15470274
申请日：2017-03-27
发明人： Zhang Jun , Xuan Wang , Dongyu Ou , Elliott Zhang , Echo Cao
CPC分类号： H03M1/1033 , H03M1/00 , H03M1/12 , H03M1/685 , H03M1/747
摘要： Methods, apparatus and articles of manufacture (e.g., physical storage media) to calibrate interpolating string digital-to-analog converters are disclosed. Example methods disclosed herein to calibrate a digital-to-analog converter (DAC) include determining a first calibration codeword based on a first nonlinearity error value measured at an output of the DAC when a most-significant-bit (MSB) portion of an input codeword is applied to an input of the DAC. Such disclosed example methods also include determining a second calibration codeword based on a second measured nonlinearity error value measured at the output of the DAC when a least-significant-bit (LSB) portion of the input codeword is applied to the input of the DAC. Such disclosed example methods further include combining the first calibration codeword and the second calibration codeword to determine a third calibration codeword to be accessed by the DAC to calibrate the output of the DAC when the input codeword is applied to the DAC.
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公开(公告)号：US20170201265A1
公开(公告)日：2017-07-13
申请号：US15470274
申请日：2017-03-27
发明人： Zhang Jun , Xuan Wang , Dongyu Ou , Elliott Zhang , Echo Cao
CPC分类号： H03M1/1033 , H03M1/00 , H03M1/12 , H03M1/685 , H03M1/747
摘要： Methods, apparatus and articles of manufacture (e.g., physical storage media) to calibrate interpolating string digital-to-analog converters are disclosed. Example methods disclosed herein to calibrate a digital-to-analog converter (DAC) include determining a first calibration codeword based on a first nonlinearity error value measured at an output of the DAC when a most-significant-bit (MSB) portion of an input codeword is applied to an input of the DAC. Such disclosed example methods also include determining a second calibration codeword based on a second measured nonlinearity error value measured at the output of the DAC when a least-significant-bit (LSB) portion of the input codeword is applied to the input of the DAC. Such disclosed example methods further include combining the first calibration codeword and the second calibration codeword to determine a third calibration codeword to be accessed by the DAC to calibrate the output of the DAC when the input codeword is applied to the DAC.
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