A Zoom Architecture Using Linear-Exponential Incremental ADC

被引：2

作者：

Wang, Qingxun ^{[1
]}

Chenand, Kaiquan ^{[1
]}

Qi, Liang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Micronano Elect, Shanghai, Peoples R China

来源：

2023 21ST IEEE INTERREGIONAL NEWCAS CONFERENCE, NEWCAS | 2023年

基金：

国家重点研发计划;

关键词：

zoom linear-exponential incremental analog-to-digital converter (LE-IADC); second-order noise coupling (NC); maximum stable amplitude (MSA);

D O I：

10.1109/NEWCAS57931.2023.10198182

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：

WThis paper presents a zoom linear-exponential incremental analog-to-digital convertor (LE-IADC). A two-phase LE-IADC using second-order noise coupling (NC) is employed as the fine ADC. The second-order NC could further expedite the accumulation of the IADC, compared with the prior art using first-order NC. Therefore, it results in a higher theoretical resolution. However, such higher-order NC gives rise to an extremely poor maximum stable amplitude (MSA). Thanks to the zoom topology, the MSA loss could be inherently compensated. Mathematical analysis and behavioral-level simulation results are presented to confirm the principle of the proposed zoom LE-IADC.

引用

页数：5