Generation of a digital correction signal to compensate for gain mismatches in a sigma delta modulator
作者： Charles D. Thompson
DOI:
关键词:
摘要: A digital correction signal is generated as a weighting actor for first output applied to integrator formed within comb filter compensate gain mismatches between the stages of sigma delta modulator and improve resolution at bus an oversampling analog-to-digital converter. The current state provided one stage compared with previous same signal. detection activated upon occurrence two consecutive states firrt level wherein such corresponds noise spike in sampled during after spike, values thereof are compared. value adjusted response before-and-after comparison until samples reach predetermined minimum value.
lens.org 参考文章(6)
Tim A. Williams, Nicholas van Bavel, Multiple output oversampling A/D converter with each output containing data and noise ,(1988)
Edward H. Lambourn, Analog-to-pulse density converter ,(1977)
Adrian B. Early, Michael J. Callahan, Larry L. Harris, Digitally calibrated delta-sigma analog-to-digital converter ,(1988)
Henry H. Martin, William D. Harrison, Fast high resolution predictive analog-to-digital converter with error correction ,(1979)
Tim A. Williams, Nicholas R. van Bavel, Oversampled A/D converter using filtered, cascaded noise shaping modulators ,(1988)
William F. Acker, Signal bias remover apparatus ,(1977)