首页 | 本学科首页   官方微博 | 高级检索  
     


Two stage class AB-AB amplifier using FGMOS for low voltage operation and SSF for frequency compensation
Affiliation:1. Department of Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. Department of Computer Engineering and Information Technology, Amirkabir University of Technology, Tehran, Iran;3. Department of Mathematics and Computer Science, Shahed University, Tehran, Iran;1. State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, Shaanxi 710071, China;2. School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China;3. School of Computer Science and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China;4. Wireless Advanced Research Department, ZTE Corporation, Xi’an/Shenzhen, Shaanxi/Guangdong, 710114/518055, China;5. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, China;1. Department of Electrical and Electronic Engineering, Public University of Navarra, Campus Arrosadía, E-31006 Pamplona, Spain;2. Department of Electronic Engineering, School of Engineering, University of Seville, Camino de los Descubrimientos, E-41092 Sevilla, Spain;3. Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM 88003, USA;1. Electronics and Telecommunication Department, Cummins College of Engineering for Women, Pune, Maharashtra, India;2. Electronics and Telecommunication Department, College of Engineering Pune, Pune, Maharashtra, India
Abstract:The paper presented here offers a two stage amplifier where both stages are in class AB mode. The input stage makes use of a floating gate metal oxide semiconductor (FGMOS) transistor which enables this circuit to operate at lower voltage and also increases overall linearity. The frequency compensation is done using voltage buffer scheme. A super source follower (SSF) acts as voltage buffer and exploited here with a series capacitor. The function of SSF is to enhance phase margin (PM) and gain bandwidth product (GBW) of the amplifier. The small signal equivalent and mathematical analysis of circuit is also given. The performance of the proposed circuit has been verified by using Mentor Graphics Eldo simulation tool with TSMC CMOS 0.18 μm process parameters. The ac simulation results of amplifier show that GBW is 9 MHz and power consumption is 0.5 mW.
Keywords:Analog circuits  CMOS  FGMOS  SSF  Class AB amplifier  Frequency compensation
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号