An 80MHz-BW 640MS/s Time-Interleaved Passive NoiseShaping SAR ADC in 22nm FDSOI Process

📋 论文概要

本文提出了一种在22nm FDSOI工艺下实现的时间交织无源噪声整形SAR ADC，支持80MHz带宽和640MS/s采样率。解决了Wi-Fi 6E应用中对高带宽、高动态范围ADC的需求，通过时间交织和无源噪声整形技术实现了低功耗高性能。

💡 主要创新点

• 采用时间交织架构结合无源噪声整形技术，在640MS/s高采样率下实现80MHz带宽。
• 基于22nm FDSOI工艺，利用无源滤波器实现噪声整形，降低功耗并保持高线性度。

🏷 关键词

📄 原文摘要

*Equally-Credited Authors (ECAs) Recently, both the number of smart devices and the amount of data transfered to and from these devices have grown at unprecedented rates. To provide users with a highquality experience, wireless LAN plays a key role among various wireless standards. Wi-Fi 6E extends the available bandwidth, enhances spectral efficiency, increases data rate, and serves more users simultaneously in public areas. To support 1024-QAM in bandwidths up to 160MHz while maintaining sufficient EVM, the ADC has to achieve inband DR of 63-70dB over 80MHz baseband bandwidth. SAR ADCs are used extensively in Wi-Fi receivers due to their low power consumption and small area. But for DR > 60dB, quantization noise and comparator noise become the dominant noise sources. Noise shaping embedded within a SAR ADC has been utilized to suppress these noise sources with minimal overhead [1-2]. The maximum reported conversion rate of 10 to

👥 作者与机构

Chin-Yu Lin*, Ying-Zu Lin*, Chih-Hou Tsai, Chao-Hsin Lu

MediaTek, Hsinchu, Taiwan