A 7.6mW 1GS/s 60dB SNDR Single-Channel SARAssisted Pipelined ADC with Temperature-Compensated Dynamic Gm-R-Based Amplifier

📋 论文概要

该论文提出了一种单通道SAR辅助流水线ADC，通过在流水线放大器中使用温度补偿的动态Gm-R结构，在1GS/s采样率下实现60dB SNDR，功耗仅7.6mW，解决了传统SAR架构在高分辨率高速度下受限于亚稳态的问题。

💡 主要创新点

• 采用单通道SAR辅助流水线架构，避免时间交织多通道带来的抖动和输入电容问题，实现高速高精度。
• 提出温度补偿的动态Gm-R放大器，改善跨导随温度变化的稳定性，提升ADC整体性能。

🏷 关键词

📄 原文摘要

Rui P. Martins1,2 University of Macau, Macau, China Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 Continuous technology scaling has allowed unceasing growth of the sampling rate of a single channel ADC in past decades. Such development not only helps reduce the number of channels in massively time interleaved ADCs, but also contributes to lower their overall jitter and input capacitance, thus enabling a further push on the ADC performance boundary. Being limited by metastability, the conventional SAR architecture is not suitable when both high resolution and speed are essential. While the pipeline SAR offers a higher speed alternative, it also keeps the low and dynamic power nature of the SAR architecture through adopting dynamic or integrating residue amplifiers (RAs) in recent works [1,2]. With an integrating characteristic, the amplification time can be short but in

👥 作者与机构

Wenning Jiang1, Yan Zhu1, Minglei Zhang1, Chi-Hang Chan1,