Nyquist-Rate Current-Steering Digital-to-Analog Converters With Random Multiple Data-Weighted Averaging Technique and $Q^{N}$ Rotated Walk Switching Scheme
Nyquist-Rate Current-Steering Digital-to-Analog Converters With Random Multiple Data-Weighted Averaging Technique and $Q^{N}$ Rotated Walk Switching Scheme
复制标题
DOI：
10.1109/tcsii.2006.882355
复制
发表时间：
2006-11
期刊：
影响因子：
--
通讯作者：
Da-Huei Lee;Yu-Hong Lin;T. Kuo
中科院分区：
文献类型：
--
作者：
Da-Huei Lee;Yu-Hong Lin;T. Kuo
在此简介中，提出了应用随机多数据加权平均（RMDWA）技术和QN旋转游走切换方案的奈奎斯特速率电流引导数模转换器（DAC），无需校准即可实现高无杂散动态范围（SFDR）和较小的最大输出误差，而校准会占用面积和功耗。 RMDWA 抑制因元件不匹配引起的谐波，以获得高 SFDR 性能。此外，当同时使用RMDWA和QN旋转游走时，QN旋转游走可以降低最大输出误差。由于动态元件匹配技术和开关方案的优点是通过所提出的 DAC 结构获得的，因此即使采用匹配性能较差的低成本小面积 DAC，所提出的结构也可以比传统随机化技术提供更小的最大输出误差
In this brief, Nyquist-rate current-steering digital-to-analog converters (DACs) applying the random multiple data-weighted averaging (RMDWA) technique and the QN rotated walk switching scheme are proposed such that high spurious-free dynamic range (SFDR) and small maximum output error can be achieved without calibrations, which are area and power consuming. RMDWA suppresses the harmonics caused by element mismatches to gain high SFDR performance. Furthermore, QN rotated walk can lower the maximum output error when RMDWA and Q N rotated walk are employed simultaneously. Because the benefits of both dynamic element matching technique and switching scheme are obtained by the proposed DAC structure, the proposed structure can deliver smaller maximum output errors than traditional randomization techniques even if a low-cost small-area DAC with poor matching property is adopted