JSSC 2021第2期Power Management180nmCharge PumpNeural Network Accelerator

A 248-μW Biopotential Ampliﬁer Tolerant to 15-VPP Common-Mode Interference for T

一种耐受15VPP共模干扰的低功耗生物电位放大器，用于双电极ECG记录。

180nm CMOS, 1.2V, 248μW, 15VPP CMI tolerance at 60Hz

生物电位放大器共模干扰心电图低功耗CMOS

▸提出共模电荷泵(CMCP)吸收位移电流

▸分析非理想条件下CMCP的影响并提供设计指南

▸实现高共模干扰耐受性同时保持低功耗

Abstract

This article presents a biopotential ampliﬁer that has a large tolerance to common-mode interference (CMI) for a reliable two-electrode electrocardiogram (ECG) recording. To withstand large CMI without affecting the ECG signal, a common-mode charge pump (CMCP) that absorbs displace- ment current from the CMI and keeps the common-mode input within the desired range is proposed. This article also analyzes the effects of CMCP under non-ideal conditions and provides design guidelines for improved si