← 返回 JSSC 论文列表JSSC 2021第12期Data Converters65nmSAR ADC
A 138-ENOB Fully Dynamic Third-Order Noise-Shaping SAR ADC in a Single-Amplifier
提出一种单放大器实现三阶噪声整形的EF-CIFF结构NS-SAR ADC，采用kT/C噪声消除技术，实现高分辨率与能效。
84.8dB SNDR, 625kHz带宽(OSR=8), 119μW功耗, 182dB Schreier FoM
噪声整形SAR ADC高阶环路滤波器误差反馈-级联积分器前馈kT/C噪声消除动态放大器
▸EF-CIFF结构实现单放大器三阶噪声整形
▸kT/C采样噪声消除技术(SNC)
▸开环自淬灭浮动逆变器动态放大器(FIDA)
Abstract
To design noise-shaping successive approximation
register (NS-SAR) analog-to-digital converters (ADCs) with high
resolution and good power efficiency, two key bottlenecks need
to be addressed. One is to realize a high-order loop filter with
low circuit overhead, and the other is to mitigate the thermal
noise. This article presents an NS-SAR ADC that synergistically
addresses both challenges. To achieve high-order efficiency,
it proposes an innovative error feedback-cascaded integrator
feedforward (