空天预警研究学报2026，Vol.40Issue(1)：69-73,78,6.DOI:10.3969/j.issn.2097-180X.2026.01.013
一种面向MRAM感测放大器的三级运算放大器设计
A three-stage operational amplifier design for MRAM sensing amplifiers
毛羽菲 1姜岩峰1
作者信息
- 1. 江南大学集成电路学院,江苏 无锡 214122
- 折叠
摘要
Abstract
In order to meet the requirements for amplifying weak storage signals in complex battlefield elec-tromagnetic environments,a highly reliable sensing amplifier for magnetic random access memory(MRAM)stor-age arrays is designed.First,the sensing amplifier circuit is analyzed;then the damping factor controlled frequen-cy compensation(DFCFC)technology is introduced to optimize the frequency response characteristics,and finally,the circuit is simulated based on the SMIC 0.18 μm technology.The simulation results show that under the conditions of a 1.8 V power supply voltage and a 10 pF capacitive load,the direct current open-loop gain of this amplifier reaches 137.38 dB,with the unit gain bandwidth of 36 MHz,and the phase margin of 74.07°,and that compared with the three common sensing amplifiers,the sensing amplifier designed in this paper has better performance.关键词
磁随机存储器/三级运算放大器/折叠式共源共栅/阻尼系数控制频率补偿Key words
magnetic random access memory(MRAM)/three-stage operational amplifier/folded cascode/damping factor controlled frequency compensation(DFCFC)分类
信息技术与安全科学引用本文复制引用
毛羽菲,姜岩峰..一种面向MRAM感测放大器的三级运算放大器设计[J].空天预警研究学报,2026,40(1):69-73,78,6.
