基于信号链分析的压力传感器前置放大器设计  

The Design of a Pre-amplifier for a Pressure sensor Base on Analysis of Signal Chain

作　　者：魏榕山[1] 黄荣[1] 

机构地区：[1]福州大学物理与信息工程学院,福建福州350116

出　　处：《中国集成电路》2016年第8期21-25,30,共6页China lntegrated Circuit

基　　金：国家自然科学基金(61404030)

摘　　要：基于信号链分析方法,研究并设计一款压力传感器的前置放大器。同传统分析方法相比,信号链的分析计算使得各个模块的指标分配更加合理。整个芯片采用SMIC 0.18μm CMOS工艺,对所设计的电路进行仿真验证,当输入电压为68m V时,输出电压波形无明显毛刺,输入等效噪声约为13nV/Hz^(1/2),系统整体噪声约为566n V。Based on the analysis of signal chain, a pre-amplifier for a pressure sensor was designed. Compared with the traditional analysis, it maked assignment reasonable for module parameter. The circuits were designed by SMIC 0.18 μ m CMOS process. When the input voltage was 68mV, the output wave didn＇t have glitch. The input referred noise was 13nV/√Hz and the noise of the whole system was about 556nV.

关 键 词：信号链分析 压力传感器 前置放大器 输入等效噪声 

分 类 号：TN722[电子电信—电路与系统]