1. Fudan University,State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics & Systems,School of Microelectronics,Shanghai,China,200433
2. Wuxi Microelectronics Scientific and Research Center,Wuxi,China,214035
3. University of Electronic Science and Technology of China,The State Key Laboratory of Electronic Thin Films and Integrated Devices,Chengdu,China,610054