A 10mW 16b 15MS/s Two-Step SAR ADC with 95dB DR Using Dual-Deadzone Ring-Amplifier

📋 论文概要

本文提出了一种采用双死区环形放大器的两步逐次逼近型模数转换器，在10mW功耗下实现了16位分辨率、15MS/s采样率和95dB动态范围，解决了传统两步SAR ADC中残差放大器性能受限的问题。

💡 主要创新点

• 提出双死区环形放大器，通过两个死区区域优化放大器的稳定性和效率，显著降低功耗并提高线性度。
• 采用两步SAR架构结合环形放大器，在低功耗下实现高分辨率和高动态范围。

🏷 关键词

📄 原文摘要

architecture has been a popular choice for power-efficient ADCs used in applications such as medical imaging. The simple and scalable architecture of the SAR ADC enables efficient multi-bit conversion per stage [1,2] however, the maximum performance of the two-step SAR is limited by the residue amplifier. The ring amplifier (RAMP) has enabled efficient two-step SAR ADCs

👥 作者与机构

Ahmed ElShater1, Calvin Yoji Lee1, Praveen Kumar Venkatachala1,

Jason Muhlestein1, Spencer Leuenberger1, Kazuki Sobue2, Koichi Hamashita2, Un-Ku Moon1 Oregon State University, Corvallis, OR Asahi Kasei Microdevices, Atsugi, Japan 1 2 The two-step SAR