电容误差平均技术在流水线ADC中的应用  

Application of Capacitor Error-averaging Techniques in Pipeline ADC

作　　者：王祥炜[1] 阎力飞[1] 杨明武[1] 

机构地区：[1]合肥工业大学理学院,安徽合肥230009

出　　处：《现代电子技术》2008年第4期15-17,20,共4页Modern Electronics Technique

摘　　要：随着流水线ADC精度的不断提高,其转换器性能受到各种电路非线性的严重影响。电容失配是引起非线性的一种主要因素。实践表明,电容误差平均技术是消除失配误差的一种有效途径。介绍几种重要的电容误差平均方法的原理和工作方式,并指出各自存在的优缺点。最后对误差校准技术的发展趋势进行分析与展望。With the increasing resolution of pipeline ADC, the performance of such converters is badly affected by various circuit nonlinearities. Capacitor mismatch is one of the main sources of nonlinearities. It has been proved that one efficient approach to treat mismatch error is Capacitor Error- Averaging （CEA）. In this paper, the theoretics and operational styles of several significant capacitor error-averaging calibration methods are introduced. Their respective flaws are also indicated. In the end, the development trend of error calibration techniques is illuminated.

关 键 词：流水线ADC 电容误差平均 电容交换 误差校准 

分 类 号：TN431[电子电信—微电子学与固体电子学]