Calibration of DAC Mismatch Errors in ΣΔ ADCs Based on a Sine-Wave Measurement

被引：33

作者：

De Bock, Maarten ^{[1
]}

Xing, Xinpeng ^{[2
]}

Weyten, Ludo ^{[1
]}

Gielen, Georges ^{[2
]}

Rombouts, Pieter ^{[1
]}

机构：

[1] Univ Ghent, Dept Elect & Informat Syst, B-9000 Ghent, Belgium

[2] Katholieke Univ Leuven, Dept Electrotech Engn MICAS ESAT, B-3000 Louvain, Belgium

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2013年 / 60卷 / 09期

关键词：

A/D-conversion; calibration; Sigma Delta modulation;

D O I：

10.1109/TCSII.2013.2268413

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present an offline calibration procedure to correct the nonlinearity due element mismatch in the digital-to-analog converter (DAC) of a multibit Sigma Delta-modulation A/D converter. The calibration uses a single measurement on a sinusoidal input signal, from which the DAC errors can be estimated. The main quality of the calibration method is that it can be implemented completely in the digital domain (or in software) and does not intervene in any way in the analog modulator circuit. This way, the technique is a powerful tool for verifying and debugging designs. Due to the simplicity of the method, it may be also a viable approach for factory calibration.

引用

页码：567 / 571

页数：5

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