Novel hybrid D/A structures for high-resolution SAR ADCs-analysis, modeling and realization

作者：Tong Xingyuan^*; Yang Yintang; Zhu Zhangming; Liu Lianxi

来源：MICROELECTRONICS JOURNAL, 2011, 42(7): 929-935.

DOI：10.1016/j.mejo.2011.04.016

• Analog-to-digital converter
• SAR
• D/A conversion
• CMOS integrated circuits
• High-resolution

An intermittent-sleeping C-R hybrid D/A structure, a resistor-reusing R-C hybrid D/A structure and an R-C-R combined D/A structure are researched with theoretical analysis and Matlab modeling in this paper. The switching power and passive components' matching requirement of these D/A structures are discussed in detail. Three SAR ADCs with these three novel structures are realized based on SMIC 0.18 mu m CMOS, SMIC 90 nm CMOS and UMC 90 nm CMOS, respectively. The theoretical analysis, modeling verification and circuit realization proves the applicability of these three D/A conversion networks to high-resolution SAR ADCs.

• 出版日期2011-7
• 单位西安邮电大学; 西安电子科技大学