A 72dB-DR ΔΣ CT Modulator Using Digitally Estimated Auxiliary DAC Linearization Achieving 88fJ/conv in a 25MHz BW

📋 论文概要

该论文提出了一种使用数字估计辅助DAC线性化的连续时间ΔΣ调制器，实现了72dB的动态范围，在25MHz带宽下达到88fJ/转换步的能效，解决了多比特量化中DAC非线性影响性能的问题。

💡 主要创新点

• 采用数字估计技术对辅助DAC进行线性化，在不增加模拟复杂度的前提下改善多比特ΔΣ调制器的性能。
• 通过数字化辅助校准，显著降低DAC非线性引入的失真，提升调制器整体动态范围。

🏷 关键词

📄 原文摘要

modulators has led to various implementations, which commonly share the usage of multi-bit quantization, low oversampling ratio and 3rd or 4th-order loop-filters [1,2]. In order to improve power efficiency, circuit and architectural innovations

👥 作者与机构

Pascal Witte1, John G. Kauffman1, Joachim Becker1, Yiannos Manoli2, Maurits Ortmanns1

Ulm University, Ulm, Germany University of Freiburg - IMTEK, Freiburg, Germany 1 2 The ongoing trend for wide-band, power-efficient continuous-time ΔΣ