事件驱动型的模数转换器设计  

Event-driven analog-to-digital converter design

作　　者：林晓伟 LIN Xiao-wei(College of Physics and Information Engineering,Fuzhou University)

机构地区：[1]福州大学物理与信息工程学院

出　　处：《中国集成电路》2022年第1期44-48,共5页China lntegrated Circuit

摘　　要：本文提出了一种适用于医疗信号处理的事件驱动型模数转换器(Level Crossing ADC)的电路,电路去掉了传统ADC固有的采样模块,采用1-bit DAC电路,低电源电压的架构。本设计采用SMIC 0.18μm CMOS工艺,电源电压为0.8V,单输入通道,在MATLAB的数据处理结果表明,整个电路共消耗功耗为0.41uw@1 KHz,信噪失真比(SNDR)为51.6db@1 KHz。In this paper,an event-driven(Level Crossing)analog-to-digital converter circuit suitable for medical signal is proposed.The circuit removes the inherent sampling module of the traditional ADC and uses a 1-bit DAC circuit and a low-voltage comparator.This design uses SMIC 0.18μm CMOS process,with supply voltage of 0.8V,and single input channel,the data processing result in MATLAB shows that the total power consumption of the whole circuit is 0.41uw@1 KHz,and signal-to-noise-plus-distortion ratios is 51.6db@1 KHz.

关 键 词：事件驱动 低功耗模数转换器 低电源电压比较器 医疗信号 

分 类 号：TN792[电子电信—电路与系统]