题目/Title：A power-efficient reconfigurable two-step VCO-based ADC for software-defined radio

作者/Author：
                        Xinpeng Xing,Peng Zhu,Hui Liu,Wei Wang,Georges Gielen

会议/Conference：ASICON 2017

地点/Location：Guiyang, China

年份/Issue Date：2017.25-28 Oct.

页码/pages：pp. 620 - 623

摘要/Abstract：
This paper presents the full design flow of a flexible two-step VCO-based Delta-Sigma ADC architecture for software-defined radio applications. The proposed ADC reconfigures its signal bandwidth and A/D conversion accuracy in a cost- and power-efficient method. With the ADC open-loop structure and the mostly-digital building blocks, excellent figure-of-merits can be obtained for all modes. A reconfigurable ADC prototype designed in 90nm CMOS technology shows that it achieves 66/80.9dB SNDR respectively within a 20/2MHz signal bandwidth, consuming 5.1/2.9mW of power. The corresponding 78/79.8fJ/step figure-of-merits are among state-of-the-art reconfigurable ADCs, and could be improved even further if technology is scaled.