δ - σ调制器中DAC失配的数字校准技术

2009 IEEE International Symposium on Circuits and Systems Pub Date : 2009-05-24 DOI:10.1109/ISCAS.2009.5118011

Wenhuan Yu, G. Temes

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引用次数: 8

摘要

针对delta-sigma (ΔΣ)调制器中的DAC失配问题，提出了一种数字校准技术。δ - σ调制器在校准模式下作为增量ADC工作。通过求解线性方程发现DAC失配，并进行数字补偿。该技术也可用于双采样δ - σ调制器。

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A digital calibration technique for DAC mismatches in delta-sigma modulators

A digital calibration technique is proposed for DAC mismatches in delta-sigma (ΔΣ) modulators. The delta-sigma modulator works as an incremental ADC in the calibration mode. The DAC mismatches are found by solving linear equations and are compensated digitally. The technique can be used in double-sampling delta-sigma modulators as well.

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来源期刊

2009 IEEE International Symposium on Circuits and Systems

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